The Threat from Within across Empires: Strikes, Labor Migration, and Violence in Central Europe, 1900–1914

Abstract The decade before the First World War saw a heightened level of social and political conflicts throughout Germany and Austria-Hungary. Strikes in pre-1914 central Europe have largely been examined as part of the development of the workers’ movement, but much less often from the perspective of the employers and government elites. Their strategies to counteract “strike terrorism” included hiring replacement workers through private strikebreaking agents, who provided a variety of services such as recruitment, transportation, housing, and providing “willing workers” with weapons for their self-defense. The discourses around “strike terrorism,” and the repressive strategies to counter it, are a lens through which we can look afresh at some of the most crucial issues in the history of central European empires in the prewar years, namely the structure of violence embedded in social conflicts, migration, growing political antagonism, and fears surrounding social democracy. This article analyzes the public debate around the protection of “willing workers” as well as concrete episodes of antilabor violence in a transnational framework. It offers a reassessment of social conflicts in the period following the 1905 social mobilizations in central Europe, and it explores the circulation of antilabor measures between Germany and Austria-Hungary, their radicalizing impact, and their connections with labor migration patterns.

industrial disputes, the employers' demand for replacement workers broadened the scope of recruitment areas and increased recourse to strikebreaking agents. This, in turn, fueled the physical and discursive violence around strikes, which had already led to the death of six workers through strikebreakers or their agents in Germany since 1906 and culminated in the killing of a unionized worker in Bohemia by a strikebreaking agent from Berlin in 1914.
With increased unionization among workers and the potential disruption of social hierarchies it entailed, strikes became a serious concern in turn-of-the-century central Europe. In Imperial Germany, especially after the political crisis that followed the Social Democratic Party's (SPD's) election victory in 1903, strikes and mass demonstrations in support of universal suffrage were perceived as a prime threat to the social order. 2 Similarly, while Austria-Hungary has long been considered to have been in permanent crisis due to mounting ethnic tensions, issues associated with the rise of social democracy and the push for democratization played a key role in domestic policy before and after the suffrage reform of 1907. 3 The wave of strikes and political protests that took place in many German and Austro-Hungarian cities in the wake of the Russian Revolution in 1905 gave renewed urgency to antilabor mobilization. 4 By then, the very repressive methods used to tackle early strike waves in the 1870s and 1880s were considered as less legitimate in an era of consolidated constitutional rule. In Germany, after the granting of coalition rights in 1869 (Gewerbeordnung), major eruptions of strike activity had produced the first efforts of employers to delegitimize labor disputes as an economic and even moral "calamity." 5 Industrial magnates and their newspapers had loudly demanded new limitations on coalition freedom, and already saw the protection of strikebreakers as a key aspect of counterstrike strategies. This early antistrike mobilization culminated in the elaboration of repressive measures against the "abuse" of coalition freedom, which were rejected by the Reichstag in 1874. In Habsburg Austria, where coalition rights were introduced in 1870, the early labor movements of the 1870s and 1880s were characterized by violent methods and compared to anarchistic attacks. Strikes had been heavily 6 See Herbert Steiner, Die Arbeiterbewegung Österreichs 1867-1889 (Vienna: Europa-Verlag, 1964). 7 While violence between strikers and strikebreakers in North America has received huge scholarly attention, the spread of violent strikebreaking in Europe has been largely overlooked. See, among many works, Stephen H. Norwood, Strikebreaking and Intimidation: Mercenaries and Masculinity in Twentieth-Century America

AMERIGO CARUSO AND CLAIRE MORELON
much farther afield. 10 Furthermore, the flow was not always unidirectional given German workers were sometimes brought to Austria as strikebreakers as well. Switzerland and northern Italy also formed part of this central European space of antilabor mobilization, with Swiss employers highly engaged in discussions with their German and Austrian counterparts while Italy often served as a labor reservoir. The picture emerging is that of a highly porous central European space where both practices and people intensely circulated.
The new interest in empire is fostered by a conceptual turn toward transnational history. 11 Although the number of studies on individual empires has increased exponentially, this has not been the case for comparative studies and translocal imperial connections. This article adopts a transnational rather than comparative approach to fill this research gap, 12 which is particularly evident with regard to the years leading up to the "crisis of empire" after 1917. 13 Without proposing a new supra-imperial framework, this approach focused on concrete interactions enables us to examine some of the center/periphery dynamics between and within these two imperial spaces in the relations of border regions to industrial centers. 14 The economic and informational disparities in regional peripheries, as well as language diversity, made these imbalances easily exploitable. 15 In the first section, we examine how militant antisocialism, antistrike reactions, and social democratic partisan journalism contributed to radicalizing the political language within the context of the media revolution and emerging mass politics before 1914. 16 Although this first section focuses on the discourse of "strike terrorism" that played out on a transnational scale, the second section explores the social reality in which the narrative of "strike terrorism" found fertile soil, focusing in particular on the link between commercialized strikebreaking 10

THE THREAT FROM WITHIN ACROSS EMPIRES
and the emergence of an integrated European labor migration space. Finally, the third section moves forward to analyze the impact of transnationally active bands of strikebreakers on the rise of a new dimension in violence in the decade before the outbreak of the First World War.
Mobilizing Against "Strike Terrorism" In August 1898, bricklayers went on strike in Potsdam, residence of the Prussian kings since the late seventeenth century. Striking workers organized picket lines outside the railway station, effectively preventing strikebreakers from entering the city. 17 The labor dispute took place only a few kilometers from the royal palace and triggered a furious reaction from the kaiser, who decided to address the issue of "strike terrorism" during the next Crown Council meeting. Wilhelm II discussed with his ministers the risk that the social democrats might control almost the entire working class in the near future. He argued that the only way to preserve law and order in the German empire was to revive Bismarck's old strategy of "blood and iron" (this time in the area of domestic policy). 18 During a Crown Council meeting in October 1898, a few months after the bricklayers' strike in Potsdam, the kaiser and his conservative ministers proposed a penitentiary bill to penalize picketing (Zuchthausvorlage).
German employers, such as steel magnate Carl Ferdinand von Stumm, a personal friend of the kaiser, depicted with renewed impetus the labor movement as a major threat to national cohesion. Once again, after the first unsuccessful efforts to tackle "strike terrorism" in the early 1870s, they proposed restricting the freedom of coalition in order to protect "willing workers." 19 In November 1898, Wilhelm II and Chancellor Hohenlohe-Schillingsfürst agreed on the urgent need to contain the alleged "physical and psychological violence" against strikebreakers. 20 They were confident that the projected penitentiary bill to penalize picketing would "drastically limit strike terrorism." 21 Wilhelm II, who was on his way to his second ostentatious state visit to the Ottoman Empire, still managed to take an active part in the process of drafting the overtly repressive text. 22 Eventually, the draft was presented to the Reichstag but again defeated by the parliamentary opposition.
This example reveals the importance of social conflicts in the minds of the government elites and shows how the notion of strike terrorism permeated German society. Verbal escalation and an emotionally charged, ideologically polarized public discourse became part of the political culture both in Germany and in neighboring Austria-Hungary. The rise of mass social movements and the birth of a modern media society form the background for sensationalized debates on violence and security around 1900, which publicized not only "strike terrorism" but also criminality, catastrophic events, and accidents. 23 The violence that sometimes took place during strikes found amplified resonance in the conservative press. This discourse relied on negative representations of workers as unruly and prone to criminality, and invited sympathy for the replacement workers. 24 For example, reporting on the trial of workers who had attacked strikebreakers outside a Graz bicycle factory in 1908, the Grazer Volksblatt detailed all the insults and blows received by the replacement workers on their way home and depicted them as "the first victims of social democratic baiting." 25 Heightened social tensions and the ascent of social democracy gave rise to a counter-discourse that deplored the pressure put on workers to join the strikes. Employers and the press portrayed the verbal and physical coercion of nonstrikers, and even the mere presence of picket lines, as a form of terrorism. The notion of strike terrorism implied that those workers who did not join the strikes ("strikebreakers" in the language of the social democrats, or "willing workers" for the opposing side) were victims of a violent intimidation campaign and in need of protection. 26 This term linked the fears generated by strikes to the "moral panic" stemming from the political assassinations and anarchism that gripped Europe in the last decades of the nineteenth century. By labeling strikers as terrorists, employers and the press equated their actions with the spectacular bombings and assassinations of the period, and integrated them into the broader picture of threats to the established order. 27 The framing of industrial unrest and mass demonstrations as a threat to national security made the labor movement an "object of securitization" for conservative circles. 28 Unionization and strikes were not simply conceived as local legitimate disputes but as urgent security concerns. This process of "securitization" exacerbated social conflicts and justified conservative demands for extraordinary countermeasures.
The strike terrorism narrative played a crucial role in transforming antisocialist fears and political antagonism into social reality. It took on a particular degree of intensity and perceived urgency in Imperial Germany and Habsburg Austria, where the dynamics of social change, unionization, and modernization were more concentrated within a short period of time and more radical than elsewhere in Europe. Employers in Austria saw the use of strikes and the "unrelenting coercion of willing workers" as a sign of the importation of social democratic methods from Germany to Austrian soil. According to them, the consequences were even more detrimental there and to be combated more forcefully as Austria's industrial development was more fragile. 29 Another reason for the heightened discourse of strike terrorism was the highly effective antilabor campaign disseminated by 24

THE THREAT FROM WITHIN ACROSS EMPIRES
Austrian and German employers and, in Germany, especially, by right-wing pressure groups such as the Imperial League against Social Democracy (1904). In the central European empires, the mobilization against the strike threat had a broad impact, not only shaping the political discourse, but also prompting countermeasures from the "loyal classes." The narrative of strike terrorism was not, however, unique to the conservative monarchies of central Europe. In early twentieth-century France, the debate on the freedom to work versus the freedom to strike was also an important part of the discussions on strikes. In the 1890s and the first decade of the twentieth century, several attempts were made to reform those articles of the French Penal Code restricting coalition, which were often used to limit picketing. 30 French courts could use the penal code to penalize workers who prevented others from working (more extreme legislation was in place in Belgium, where picketing was entirely forbidden). 31 Widespread fears of strike violence and concerns for the safety of nonstriking workers also existed in French society, and the notion of "terreur syndicale" (the equivalent of Streikterrorismus) surfaced in the press. 32 However, the strategies adopted by employers against strikes remained less systematic in France. 33 In Great Britain, as early as the 1890s and increasingly after the turn of the century, the "political terrorism" of organized labor had been stigmatized by conservative newspapers, such as the Daily Mail, and prominent "free labor" organizations, such as the National Free Labour Association (1893) led by William Collison, self-proclaimed "king of the blacklegs." 34 However, hostile legal decisions came to an end under increased parliamentary pressure from the Labour Party with the passing of the Trade Disputes Act in 1906.
The notion of "terrorism" applied to labor disputes circulated transnationally and pervaded political discussions on strikes around 1900. The heightened language was not limited to fringe publications, but was instead widely used and reflected growing concerns. Supported by employers' associations and by the Imperial League against Social Democracy, a large number of publications opposed to strike terrorism and in favor of better protection of willing workers circulated in Germany in the decade before the beginning of the First World War. 35 In 1909, the league published a propaganda leaflet listing hundreds of these alleged "cases of terrorism" (Terrorismusfälle). 36 It also advised victims of "terrorism" on how best 30  to resist. In the same period, German "yellow" newspapers mushroomed and systematically denounced episodes of "red terrorism." 37 In Austria, too, employers saw the increased organization of workers as a form of terrorism holding them hostage. The Union of Industrialists reported several cases of workers threatening to strike if nonunionized workers were hired and viewed it as a blatant example of the "terrorism" exercised by workers' organizations. 38 The mouthpiece of the Austrian employers' association, Die Arbeit, led a systematic campaign for a strengthening of state repression in view of the "legal uncertainty" that led "in almost every strike to unprecedented strike violence" and forced employers to find remedy against "strike terrorism." 39 Individual employers also used this language. In a letter to the Interior Ministry, an employer in Traisen (Lower Austria) denounced "the alarming increase (Überhandnehmen) in social democratic terrorism" and called for more repressive measures against picketing. 40 The notion of "terrorism" was found in both the German-speaking and the Czech-speaking presses. A conservative Czech newspaper, for example, condemned the "terror in the name of freedom" against nonunionized workers in factories in Prague, who were subjected to verbal threats while the unions applied pressure to have them dismissed." 41 Complaints also made their way into Parliament, where calls for better protection of willing workers were supported by German nationalists. An interpellation in the Reichsrat against the "brutal violence" used by social democrats to force workers to join strikes criticized the state for tolerating "terrorist activities," which threatened the "safety and lives" of "willing workers," while the power of "terrorist organizations" rapidly increased. 42 Remarkably, the attacks against the labor movement also echoed in rural circles, for example, during a demonstration by agrarians against strikes in Vienna, which denounced strike terrorism. 43 In 1906, the Austrian Union of Employers sent a memorandum to the Interior Ministry calling for reform to the law on coalition freedom and the banning of picket lines. Many employers sent separate correspondences to the ministry in support of legislative change. 44 In 1909, a petition organized by the employers' associations and promoted by the Christian Social Party calling for reform of the right to strike and the protection of willing workers was submitted to Parliament. It bore the signatures of almost two hundred thousand Austrian employers. 45 In 1910, German industrialists started a similar campaign for better protection of strikebreakers, the intervention of the army, and the demonstrative use of 37

THE THREAT FROM WITHIN ACROSS EMPIRES
machine guns against striking mineworkers in the Ruhr areas. 46 That same year, the most influential German conservative newspaper, the Kreuzzeitung, published a long article on the responsibility of the state to protect willing workers. Wilhelm II enthusiastically read the article and tried again to pressurize the Prussian government into approving more restrictive legislation. 47 Although neither German nor Austrian conservatives were successful in implementing a bill to formally penalize picketing, the existing legislation and decisions of the courts were already quite repressive. 48 In Habsburg Austria, local measures of repression were sometimes harsher than the formal regulations. In Asch/Aš (Bohemia), for example, the local prefect published a proclamation completely forbidding picketing during a textile workers' strike. 49 In Germany, shortly before the repressive law against picketing was definitively abandoned in 1900, the highly popular satirical magazine, Simplicissimus, featured a caricature of two gendarmes exclaiming "violence is still possible even without the new repressive laws." 50 Prussian courts gave out heavy sentences not only for verbal threats and low-level violence against strikebreakers, but also for insults and defamation (Ehrverletzung). 51 Using the term strikebreaker to insult someone often resulted in a prison sentence. Legal disputes over honor formed part of everyday life in the German Kaiserreich, and lawsuits for insults meted out during strikes shaped labor relations. 52 Severe punishments for defamation were also common in Austria, where Ehrenbeleidigung lawsuits were brought over use of the term strikebreaker. The Union of Industrialists applauded a decision by the Supreme Court of Justice in 1907 to consider accusations of strikebreaking as defamation. 53 A gilder, for example, attacked the newspaper Arbeiterwille for having called him a "strikebreaker," and book printers whose names had been included in a list of strikebreakers in the Salzburger Wacht also objected to this particular term. In both cases, the editors were fined. 54 Any attempt at moral punishment or social shaming of strikebreakers could be construed as an attack against their honor. 55 Pressure to change legislation was only one of the means available to employers to counter strikes. Around the turn of the century, employers mounted a coordinated counterattack. They created associations at country level, which became progressively more centralized. 56 These associations promoted effective measures against strikes, from lockouts to blacklisting or subscriptions to strike insurance. 57 They also quickly created and maintained strong personal and institutional links with similar organizations abroad, such as those between Germany and Switzerland. 58 As workers began to organize international networks, so did employers seeking solutions to the threat of strikes. 59 In 1910, for example, the building contractors' associations of Germany, Austria, and Switzerland signed an agreement not to hire striking or locked-out workers. 60 Employers and politicians keenly followed the developments in strike management in neighboring countries. Reports in the Austrian press, for example, often commented on the situation in Germany. 61 The canton of Zurich, where picket lines had been temporarily banned in 1906, was seen as a model. 62 During a Reichstag debate in 1907, the conservative Willibald von Dirksen enthusiastically reported that Italian Prime Minister Giolitti and French Premier Clemenceau had defended state intervention in protecting willing workers and described the use of soldiers as strikebreakers in place of railway workers. 63 Furthermore, and more importantly, the Swedish general strike of 1909, one of the longest and most extensive social conflicts of the period, was studied by both German and Austrian employers as an example of a total defeat of the unions to be emulated. Pamphlets on the strike were published in Germany, Switzerland, and Austria. 64 The director of the Swedish Employers' Association even came to Vienna in February 1910 to give a speech on the lessons to be drawn from this experience; he drew particular attention to the Swedish employers' organizational strength, their mutual strike insurance schemes, their use of civic militias, and state support, and concluded that as long as there was solidarity among employers and state support, "we and bourgeois society have nothing to fear from a general strike." 65 Employers and conservative politicians also stressed the urgent need to support the new associations of "patriotic," "loyal," or "yellow" workers that had rapidly spread on a transnational scale in the decade up to 1914. Inspired by the French right-wing "yellow" associations (originally created in Montceau-les-Mines in 1899), the well-organized German counterstrike front created unions that were favorable to employers and committed to opposing strikes. 66 Employers and right-wing pressure groups often financed them directly or indirectly, and accorded minor benefits to the members of these unions in exchange for loyalty and non-engagement in strike action, the idea being to create a counter-workers' movement as a tool against social democracy. The yellow movement developed in Austria over the following years, and the employers who promoted it made explicit reference to its being based on the German model. 67 As a Czech union newspaper remarked, although the yellow movement was presented as a national movement in Germany and in Austria, it was an international phenomenon: "The yellow movement in France influenced the yellow unions' movement in Germany, which was in turn transferred from there to Austria." 68 The fact that yellow unions were mostly described as "patriotic" or "loyal to the empire," at least in the German case, was not a coincidence. The counter-mobilization against strike terrorism had a major impact on political polarization as it created links between internal and external enemies, antisocialism and nationalism. In June 1897, Wilhelm II delivered a speech in Bielefeld critical of "revolutionary subversion" during labor disputes. The kaiser's speech was similar in tone to his notorious Hun speech against the Boxer Rebellion, although in Bielefeld he threatened internal enemies with "ruthless repression." 69 Historians have considered the ruthless representation of political enemies as criminals and "beasts in human form" as a key precondition for the escalation of violence in the early Weimar years. 70 However, this violent discourse was already widespread in Wilhelmine Germany. Kuno von Westarp, a key figure in the German right in the early Weimar years, delivered many speeches in the Reichstag around 1910 in which he created a polar opposition between "patriotic workers" and "strike terrorism," labeling the latter social democratic before 1914, and Bolshevik after the November Revolution. 71 Conversely, central European social democratic newspapers and the trade union press referred to strikebreakers in rather brutal, intimidatory tones. The Swiss newspaper Grütlianer, for example, insulted the strikebreakers, calling them Judas souls, or suggesting they were doing the disgusting work of an executioner's servant (abscheuliche Henkersknechtdienst), and published their home addresses, inciting readers to attack them. 72 Strikebreakers in Prague were branded as traitors with threats posted on their house doors. 73 This raises fresh questions about the roots of the political violence that escalated at an unprecedented rate after the Great War in the former Hohenzollern and Habsburg empires. In the prewar period, there is undoubtedly a certain gap between the negative discursive construction of strike terrorism and the social reality of largely peaceful strikes and political demonstrations. After 1918, this gap disappeared, and the experienced brutality of the political conflicts sometimes even transcended the discursive violence in media representations.
The gap between discourses and social reality does not mean that episodes of violence and radicalization were a marginal concern in prewar societies. The narrative of strike terrorism was not completely disconnected from reality, and violence was embedded in the context of labor migration and strikebreaking. The hiring of foreign workers was not a new practice at the turn of the century, but it grew in importance in the context of an increasingly mobile workforce and employers even more determined to forcefully counter strike actions. The professionalization of strikebreakers was linked to the increased mobility of labor within central Europe at the turn of the century, which created an integrated European labor migration space dominated by private agents who used questionable practices to exploit migrant workers. In the next section, we will focus on these aspects in order to shed light on the context in which the narrative of strike terrorism found fertile soil and generated social tensions, fears, and low-level violence before 1914.

Labor Migration and Strikebreaking Agents
Over the two decades before the outbreak of the First World War, Germany had become the second destination country for immigration in the world: between 1871 and 1910, the number of foreigners rose from 260,000 to 1.2 million. 74 Throughout this period Austria-Hungary was the foremost country of origin of foreign workers in Germany: in 1907, 40 percent of foreigners employed in Germany came from Austria-Hungary, 24 percent from Russia, and 14 percent from Italy (mostly the northern regions). 75 Germany, northern Italy, Switzerland, Austria-Hungary, and Russian Poland constituted a closely interdependent labor market, with emigration preponderant in some regions and immigration in others. Emigration from the Austrian half of the empire grew in importance around the turn of the century, equivalent to 5 percent of the population in 1900. 76 The majority of the cross-border migrants went to Germany (more than went overseas). More than half the Austrian workers in Germany worked in mining, industry, and the building trade. 77 Seasonal agricultural workers, many from Galicia, formed another significant proportion of emigrants, although their numbers are difficult to estimate (approximately two hundred thousand in 1912). 78 While internal migration to the industrial centers of the Habsburg empire mostly originated from the core regions of the empire (present-day Austria and the Bohemian lands), Galician workers tended to move abroad, especially to Germany.
Moving from one country to another for work heavily relied on the business of private agents, who provided a link between employer and manpower, and emerged as key players in central European labor migration. Agents in Habsburg Austria recruited candidates for immigration for the benefit of German industry and landowners, as well as for German shipping companies, and earned a commission for each new recruit. As shown in the case of overseas migration, agents were indispensable in navigating the difficulties of the journey and government restrictions. 79 The extent to which they actually stimulated emigration instead of simply facilitating it is debatable, but their presence on the Austrian territory is not. 80 Galicia, especially, was described as an "agents' paradise," with agents competing to attract migrants to German ships, German mines, or German fields. 81 Border towns, such as Oświecim (Auschwitz), were crawling with agents and their subagents recruiting newcomers in search of work and travel in nearby Germany. 82 In the mining border region of Austrian Silesia, the number of agents targeting miners significantly grew in the last years before the war. 83 Miners also crossed the border illegally to benefit from higher Prussian wages. 84 The phenomenon of German agents, however, was not confined to the Silesian-Galician border but also affected other regions of the monarchy. Areas of Carniola (present-day Slovenia), for example, were reportedly deserted with entire factories deprived of their workers due to the efficiency of agents working for German industry. 85 The action of private agents in the recruitment and transportation of replacement workers during strikes was particularly controversial. In 1908, a social democratic newspaper conceded that "it cannot unfortunately be denied that German strikebreaking agents have repeatedly successfully found willing workers in Austria." 86 Contemporary accounts highlight the potential for abuse of power at the core of the agents' system in both the agricultural and industrial sectors. Agents with doubtful practices were accused of taking a very large cut of the field laborers' wages, and of exploiting their ; at the turn of the century, German shipping companies needed to expand their customer base as emigration from Germany diminished and thus successfully sent agents to eastern Europe, which became a prime market for them. 83  ignorance of the German language to deceive them with regard to working conditions and pay. 87 An official report by the Austrian Vice Consul in Germany in 1912 was very critical of the foremen who provided fieldworkers to estate owners in Germany. They were reported to have complete control over the agricultural workers, charging them for transport and meals, and in some cases also physically and sexually abusing them. The consul recommended restricting the trade of these private agents as they exerted too much power over the workers, distributing the work as they wanted, and having all the wages paid directly to themselves. 88 Agents were often compared to slave traders, and complaints about their unscrupulousness were frequent. In a discussion on the central European labor market, Polish lawyer Leopold Caro denounced the whole system of migration agents in Austria, quoting the words of the head of the German shipping company Norddeutsche Lloyd: "In Galicia we work with the scum of humanity." 89 In Germany, a large number of the private labor agents had previous criminal convictions. A Prussian survey from 1895 found that 11.3 percent of them had prior convictions, while 43.2 percent of agents in Bavaria had prior convictions in 1909, and 47.3 percent in 1914 (half of them for business crimes). 90 The flourishing trade in human labor led to fierce competition among the seven thousand active

agents (Menschenhändler), who were paid by both the employer and the worker (5 crowns each). 91 Well-known German strikebreaking agents, such as Friedrich Hintze and Karl
Katzmarek, also had criminal backgrounds; they were paid 10 marks for each strikebreaker they delivered, but passed on only a small percentage of this to the willing workers. 92 Relying on agents also had drawbacks for employers. They sometimes encouraged workers to break their contracts or hired unfit workers simply to get the fee. As a result, Prussian landowners asked the state to intervene to regulate the business and get involved in labor mediation. Complaints led to the creation of the Deutsche Feldarbeiterzentralstelle in 1905. This organization (which in 1911 became the Deutsche Arbeiterzentrale) was a private agency under the control of the Prussian Agriculture Ministry, which had the task of finding and hiring foreign workers. After 1908, it also delivered official working permits for a fee, which revealed a combination of public and private in the regulation of Germany's eastern borders. 93 The Prussian government wanted to provide cheap manpower for its large landowners while limiting the number of Poles settling in the region. It also struck a deal with the Ruthenian National Committee, which hoped that the emigration of seasonal workers to Prussia would be of benefit to their agricultural strike action at home. 94 The Zentrale, however, continued to recruit mostly agricultural workers, and only very marginally industrial workers, which meant that industrialists from all over Germany continued to rely on private agents for their needs. 95 In Austria, as well, there were attempts to regulate the agents' dealings. A regional 1909 decree in Galicia introduced rules for the business of recruiting workers, while in 1904 the empire-wide creation of public labor placement agencies intended to provide an alternative offer. 96 In practice, these regulations did not put an end to the flourishing business of private agents, who often made additional money by providing accommodation and food to displaced migrants at extortionate rates. 97 The emigration of Austrian industrial workers to Germany (195,664 in 1907, mostly employed in the mining, construction, metal, and textile industries) had gradually evolved from its initial phase, which saw men crossing the Bohemian and Silesian borders looking for better wages. A report from the Austrian consul in 1913 indicated that the German and Austrian agents' promotional efforts had extended recruitment to the whole empire.  concerning the agricultural sector (unfulfilled promises, hiring of unfit workers). 98 The aim of the emigration law discussed in 1912-1914 was to address these concerns and provide regulation: a 1913 draft required special authorization to practice the profession of agent and limited it to Austrian residents. 99 One of the Habsburg officials' goals was to keep qualified employees for their home-grown industry. Austrian industry was suffering from a general manpower shortage, which, at least in Salzburg, Upper Austria, Carinthia, and Carniola, was partially due to emigration to Germany. 100 The Austrian authorities therefore adopted a defensive attitude toward the agents' recruitment efforts. When the managers of mines in Prussian Upper Silesia (Kattowitz) asked the Galician governor for permission to send three agents to Galicia to recruit workers in 1913, they were turned down because of a labor shortage in mines in Austria. 101 The Interior Ministry drafted an announcement to be published in newspapers and distributed in Austrian coal mines alerting workers to agents recruiting for work in Germany. "In most cases," warned the announcement, recruits either did not get work or had to work for lower pay, and then turned to consular authorities for help. 102 The Austrian consul in Hamburg had dealt with such a case a few years earlier when 135 workers were recruited under false pretenses by private agents for a cement factory in Hannover. He had recommended sending warnings not only to Bohemia, where the workers had come from, but also to Styria, Lower and Upper Austria, and Galicia, places where the agents might try to recruit. 103 During a masons' strike in Berlin in 1907, several agents (five, reportedly) traveled to Moravia to recruit workers promising greater pay and to cover travel costs. Local authorities monitored their activities because the workers ran the risks of being threatened by the Berlin strikers once they arrived and being sent back as penniless foreigners at the expense of their hometowns. 104 Warnings came not only from government officials concerned about losing their local workforce, but also from social democrats who saw cross-border recruitment as a means of weakening strikes in neighboring countries. Attempts to inform workers in the countries of origin were part of a broader strategy of solidarity to help ensure the success of strikes abroad. The importation of foreign labor became a major concern for international trade unions and was officially condemned at their international congresses in 1907 and 1909. 105 Austrian social democrats saw the role of their country in this dynamic as a labor reservoir, and therefore issued warnings against German agents. On a construction workers' lockout in Germany in 1910, the Arbeiter-Zeitung wrote: "We must arm ourselves with caution, and all workers must observe every labor agent with complete mistrust. Strikebreaking agents, which have appeared in Leoben, will try in every place and with every conceivable lie to recruit Austrian workers to serve as the auxiliary troops of employers in Germany…." 106 In 1910, an editor of the same newspaper traveled to Croatia, Dalmatia, and Carniola to prevent workers being recruited by Swiss agents who were hiring throughout the Habsburg monarchy for the Winterthur building contractors. 107 Warnings to prevent the influx of manpower that included descriptions of the true working conditions regularly featured in the German-speaking and Czech-speaking press in Austria. 108 Social democrats also led direct actions to prevent workers from going abroad: at the train station in Brünn/Brno, as thirty masons boarded a train to reach Braunschweig where they had been recruited by a local foreman, twenty-five unionized workers came to the train platform to dissuade them from traveling and inform them of the strike. The police quickly dispersed them, and the workers left for Germany. 109 This propaganda also aimed to counter the negative representations of foreign workers held by German workers, which became more widespread after the turn of the century. Even in a place of long-standing intense exchanges and migrations such as the southern border of Saxony, Bohemians (and especially Czech speakers) were stereotyped as strikebreakers. 110 Italian workers also suffered from a negative image as strikebreakers, which worried even the Italian foreign minister, Antonino di San Giuliano. In a speech to parliament, he argued that the negative international image of Italian workers was having repercussions on Italy's international prestige. 111 The example of Italy shows the active efforts of social democrats, and, in part, also of state authorities to counter strikebreaking abroad through information. The aforementioned strike among German construction workers in 1910 led the Italian government to send a communication to all the prefects to inform workers intending to travel to Germany of the unfavorable situation and to warn them of the risks involved in acting as strikebreakers. 112 The Italian delegation at the International Socialist Workers' Congress of 1893 conceded that work migrants had a "detrimental influence" because they "depress wages, prevent strikes and give rise to sometimes fierce conflict," 113 and proposed putting out targeted propaganda as a countermeasure. The Italian-language newspaper L'operaio italiano (The Italian Worker), promoted by the German Free Unions and published in Berlin from 1898 to 1914, offered a means to inform Italian migrants and militated against strikebreaking. In a joint German, Swiss, and Austrian mission, social democrat agitators were sent to disseminate information in Italy in the winter when workers returned home, albeit without much success. 114 Work migrants were indeed less likely to be unionized 115 because the high level of mobility, with many return or seasonal movements, made joining a union less attractive. 116 Lack of information also made recruitment easier, as a Catholic priest explained in his diary in 1905: "These people are fetched by unscrupulous agents who promise them high wages while concealing the strike or lockout." 117 The newspapers of the German unions had in 1902 already noticed the positive effect of propaganda efforts among Italian workers in reducing strikebreaking. However, this strategy was only efficient against "unwitting strikebreakers" but not against the professionals, "the worst elements on earth," who targeted factories on strike and ransomed the unions by threatening to take on work. 118 Efforts to spread information translocally were a weak weapon against the growing professionalization of organized strikebreakers, who explicitly offered a full service, including transportation and protection, to employers all over Germany and across borders. An article from 1914 in the Czech glassmakers' journal entitled "Slave Traders" described the rise of this transnational business: In Europe, it is especially in Germany that many of these questionable men have for some time been organized into a proper protection army against "upheaval and revolution." Now, however, seems to be a flourishing period for these gentlemen, who are in fact more concerned with their bag of money than with the factory of the employer affected by the strike. German employers spotted very quickly the type of "workforce" offered by these agencies…. This is why they are now looking for new fertile fields, where they can still make considerable gains with their procurement of strikebreakers, and they have guessed that they would find them where fools do not die out, that is, in Austria. 119 The article went on to quote an advertising letter from a German strikebreaking agent to a factory owner in Austria, offering to supply him with workers. The advertisement even proposed to provide favorable references. Another newspaper quoted a letter sent from August Müller's international labor recruitment agency in Hamburg to the association of metal workers in Reichenberg/Liberec (Bohemia) asking "if it would be possible to get from you people prepared to work during strikes." 120 This company, created in 1906, had established an international strikebreaking business and was also used by Swiss building firms during the Winterthur strike. 121 As mentioned in the introduction, the social democratic press equated this business with the white slave trade and reported that workers had been "sold as slaves" and "transported like cattle." 122 Comparisons with the slave trade reflect a wider panic over the enslavement of vulnerable populations and their treatment at the hands of agents, which was important in both the anti-emigration and anti-prostitution discourses in the late Habsburg empire. 123 Indeed, both migration streams were intertwined: the figure of the migration agent and the sex trafficker were often fused and viewed as a danger for "gullible" eastern Europeans. 124 The international mobilization against the trafficking of young girls, which culminated with the 1910 Paris Convention for the Suppression of the White Slave Traffic, was, however, more developed among bourgeois circles and conceived as a moral mission. 125 The discourse and social reality of "slave handlers" on the one hand and "strike terrorism" on the other were embedded in the same context of heightened social conflicts, perceived threats, and the new challenges that state authorities, political parties, employers, and trade unions had to face in the prewar years. The next section will show how tensions related to labor migration and strikebreaking were manifested in critical episodes of brutal repression, and how German and Austrian authorities handled them. We will argue that these episodes highlight a new dimension of violence emerging before 1914.

Violent Professionals and Lenient Authorities
Strikebreaking agents were not only recruiting and bringing in workers, but were also engaging in violent confrontations with the strikers. In their advertisements to companies, they presented their activities as a regular profession. The professionalization of strikebreakers was even discussed in the German Reichstag, where in 1913 the SPD deputy Oskar Cohn noted that strikebreaking had become a profession in itself and the recruitment of strikebreakers a business. 126 In the decade before the First World War, the groups led by Friedrich Hintze in Hamburg and Karl Katzmarek in Berlin emerged as the most powerful strikebreaking agencies in Imperial Germany. These bands of strikebreakers were highly professionalized and active in almost all of German-speaking central Europe. They were well known for their brutality and their use of weapons as a main part of their everyday business.
Katzmarek's and Hintze's names became synonymous with professional strikebreaking using brutal methods, and the terms Hintzebrüder, Hintzegarde, or Katzmareks were used to insult nonstriking workers or to emphatically describe other armed groups of strikebreakers. 127  gangs: "As capitalism pursues everything internationally, the recruitment of strikebreakers is also organized internationally. In Germany, a gang of publicly dangerous elements has formed, which has acquired under the name Hintzegarde, a European, though terrible, reputation. These fellows are professional strikebreakers in the true sense of the word.… They do not limit their actions to Germany but also go abroad. They were recently in Zurich and now a column has been recruited to Innsbruck to break the local carpenters' strike." 128 When the director of a Bavarian sanatorium threatened with a revolver picketing men who prevented sixty workers recruited from Upper Austria getting off the train, the same newspaper remarked ironically that the doctor had "missed his calling" and should instead join the "Hintze men" as a strikebreaking agent. 129 Friedrich Hintze even gave a long interview to the popular newspaper Berliner Morgenpost, in which he described his career as a professional strikebreaker and provided insights into how he organized his business. 130 Hintze initially worked for the aforementioned August Müller recruitment agency in Hamburg, but shortly after Müller's death he formed his own organization. He claimed to have more than six thousand strikebreakers that he could mobilize in only eight days. Although this claim was obviously exaggerated, Hintze was able to organize quite large groups of armed strikebreakers with long-range mobility. In 1911, according to Vorwärts, hundreds of "Hintze's soldiers" traveled from Hamburg to the East Prussian city of Königsberg, a distance of nearly 900 kilometers. Berlin and Hamburg were the most important logistics centers from which strikebreakers could reach remote cities like Königsberg, although they more frequently operated in the regional areas of cities such as Bremen and Kassel, as well as many small towns in Brandenburg and Mecklenburg. The motivations of professional strikebreakers were primarily economical: they saw it as an opportunity for easy money, even though their activities were then exploited politically.
In his interview to the Morgenpost, Hintze pointed out that his services were not limited to labor replacement but also included supplies, logistics (he had three transport vehicles), and organizing the "self-defense" of strikebreakers against unionized workers. Hintze was aware that the interview with the Morgenpost was a great opportunity for free publicity. He mentioned that his strikebreakers did any job the company would pay for, but more importantly, they would intimidate unionized workers. Hintze proudly asserted: "With thirty men I can terrify five hundred strikers." 131 Other German strikebreaking agents with criminal backgrounds, such as Joseph Ruppert, who killed a striking worker near Magdeburg in 1912, openly admitted that violent intimidation was part of their job and that therefore "weapons are our working equipment." 132 The professionalization and militarization of strikebreaking was a response to the employers' demand for security against strike terrorism, in terms of work replacement in the context of unprecedented waves of strikes and protection of private property and the so-called freedom to work. The ready availability of cheap revolvers gave strikebreakers easy access to weapons and the opportunity to use them, partly in self-defense and partly with the aim of intimidating unionized workers. Eventually, what fed the spread of violent gangs of strikebreakers was not only the employers' growing demand for work replacement and security during labor conflicts, but also the authorities' ambivalence in prosecuting antilabor violence. Violent actions, and even murder, carried out by armed strikebreakers were almost always considered cases of legitimate self-defense against the provocations and attacks by unionized workers.
According to the narrative of strike terrorism examined in the first section, strikebreakers were seen by government elites, especially in Germany, as part of the "loyal classes," and therefore deserving of special protection. 133 Free labor unions and social democratic newspapers obviously played an active part in sensationalizing violent strikebreaking and used the term class justice to refer to the alleged protection of strikebreakers by state authorities. In 1907, for example, two strikebreakers killed a worker named Schödel during a pub brawl in the district of Wunsiedel in northeast Bavaria. Vorwärts described the murder as a state crime (Staatsverbrechen) because state authorities were protecting strikebreakers as "useful members of the community." 134 Episodes of violence, and especially the several unpunished murders, perpetrated by armed strikebreakers became emblematic cases of repression and legal discrimination against striking workers. The escalation of violence culminated with the killing of a striking worker by Paul Keiling, a German strikebreaking agent, in Bohemia in 1914.
Before the Keiling episode, six other cases of striking workers killed by armed strikebreakers in Imperial Germany went unpunished between 1906 and 1914. The first took place in 1906 outside the union motor vehicle factory near Nuremberg in Bavaria, where Ernst Thiel, a twenty-two-year-old strikebreaker, fired three times at one of the local trade union leaders, Melchior Fleischmann, who died two days later. 135 In 1911, former police officer Brackhage fired his revolver, killing the dock worker Meierling during the Rhineland Transport Company strike in Duisburg. 136 One year later, the prominent strikebreaker Joseph Ruppert killed a striking worker near Magdeburg, and in 1912 the German strikebreaker Otto Kaiser killed the Swiss worker Karl Wydler near Zurich. 137 In 1913, a strikebreaker named Brandenburg stabbed striking worker Kühl with a bread knife in the port city of Stettin. 138 There is also a very long list of workers seriously injured by armed strikebreakers in the same period. For example, violence escalated on both sides in Rohrbach an der Gölsen (Lower Austria) when a group of twenty strikebreakers coming home from the funeral of their employer's wife attacked two workers from another factory, bloodily beat them, and fired revolver shots. 139 This violent incident took place in a context of heightened tensions between the two sides in the town after an apparent attack on a nonstriking worker a few days earlier. 140 newspapers in Austria-Hungary and the Swiss Confederation, which reported almost daily on the murder. The entire front page of the Swiss socialist newspaper Grütlianer as well as the Austrian Arbeiter-Zeitung of February 12, 1914, was dedicated to the Solinger murder, perpetrated by "a seventeen-times convicted felon." 148 According to the Arbeiter-Zeitung, Keiling worked as agent provocateur for the German police, 149 and Vorwärts reported that even before the Solinger murder he proudly claimed to have police power (Polizeigewalt). 150 Vorwärts further reported that during a strike in Berlin in 1913 Keiling also gave direct orders to the police: "Keiling, armed with a revolver and a knife, ordered the policemen: 'Take out your sabers!'" 151 Similar reports had appeared in the Austrian social democratic newspapers concerning Toni Meinel, another well-known agent of willing workers operating in Berlin, who reportedly presented himself as a "professional strikebreaker" and, according to the article, claimed: "I can do what I want, I am allowed in certain circumstances to shoot, I can even kill a man, I have the necessary police protection." 152 Along with the claims that they protected strikebreakers, the police were also accused of playing a role in the recruitment of willing workers. 153 In his study of the Moabit riots, Thomas Lindenberger draws attention to the cooperation between the Berlin police and Hintze, which earned the latter the nickname "hero of Moabit" in the social democratic press. In his analysis of the riots, Lindenberger argues that the legitimacy of the state's monopoly of violence was undermined not only by police intervention but also because professional strikebreakers were tolerated and even encouraged. 154 Several reports also focused on the doubtful morality of strikebreakers, who were described as frequenters of brothels, and who shocked the population with their aggressive, uncivilized behavior. 155 In June 1906, Vorwärts reported from Cologne that armed strikebreakers from "semi-civilized regions," such as the Balkans and Italy, not only threatened striking workers but terrorized the entire city with violence and criminal activities. 156 During a strike in Winterberg/Vimperk (Bohemia), the social democratic newspaper complained about the "scandalous" behavior of these men: "Every Sunday they take girls barely out of school from one bar to another, and they drink, fight, and brawl, even in the factory." 157 A similar complaint about strikebreakers imported from Germany during a strike in Nesselsdorf/Kopřivnice (Moravia) referred to them as "a real clean company," always fighting and brawling, and who left the public baths "full of lice and foul." 158 In contrast, bourgeois newspapers, such as the Allgemeine Zeitung, stigmatized striking workers as violent alcoholics and published detailed reports to support the legitimacy of willing workers defending themselves from strike terrorism. 159 Although the narrative of class justice highlighted by the social democrats needs critical reassessment, the Prussian and Austrian authorities had a very permissive attitude toward strikebreakers defending themselves with weapons. 160 The case of Keiling, who was sentenced to only eight months in prison, clearly demonstrated the quasi-impunity of violent strikebreakers, which was also evident in the aforementioned murders of organized workers by armed strikebreakers that were considered as self-defense. During the same Austrian book printers' strike of January 1914, a strikebreaking agent from Berlin shot at passers-by in the streets of Innsbruck. The police report, however, presented him as a victim of striking workers, who had been "attacked on the street" and fired his revolver to "scare his opponents." 161 Bands of armed strikebreakers led by tolerated criminals, such as Keiling and Katzmarek, used private and extra-legal means to ensure the safety of the work-willing, and, more generally, protection of the bourgeois order, which was perceived as increasingly threatened. In the 1890s, employers, state authorities, and conservative parties tried without success to impose repressive counterstrike strategies, and therefore had recourse to private agents both for the recruitment of a cheap labor force and for security tasks. In this sense, the spread of violence and intimidation carried out by armed strikebreakers can be seen as a result of the expansion of the public sphere (through the democratizing pressures of parliaments and the press) that made legal discrimination and state-led repression of social movements more difficult. This radicalized social tensions and gave rise to a new field of violence based on privately organized coercion and its ambivalent relationship with the state.

Conclusion
By the outbreak of war, two discourses on strikes ran alongside each other in central European media: on the one hand depictions of replacement workers as hapless victims of violent strikers, and on the other hand unionized workers portrayed as living in fear of the rise of armed strikebreaking gangs. The concept of freedom was weaponized by both factions amid accusations of restricting the liberty to work on one side, and slave trading on the other. Both visions magnified and simplified the low-level violence between strikers and nonunion workers in the factories and streets of Germany and the Habsburg monarchy, but they also highlighted the growth of strikebreaking agents as important actors in labor conflicts. In the decade preceding the war, the activities of strikebreaking agents expanded considerably in Germany, Austria, and Switzerland, and their violent modus operandi had already had lethal consequences by 1914. Strikebreaking agents were part of the arsenal of measures to prevent strikes at a time when employers were becoming increasingly organized at the national level. Agents operated in a central European labor market with frequent border crossings and where a high level of dissymmetric information (heightened by language diversity) constituted an asset to them.
Armed groups of professional strikebreakers were responsible not merely for a quantitative increase in violence, but also, and more importantly, for a change in the structure of violence during strikes that highlights elements of continuity between the pre-and postwar years. The final years before the war saw, firstly, the emergence of new actors, often with criminal backgrounds that formed and led privately organized armed groups for antistrike purposes. 162 Thus, the spread of privately organized coercion carried out by militarized citizens cannot be explained merely with the collapse of state authority and the anti-Bolshevik paranoia of the immediate postwar period (or with the brutalizing effects of the war). As this article has shown, this phenomenon has deeper roots, namely the radicalization of antisocialism and the privatization of antistrike activities in the prewar years. The second aspect that highlights continuity between the pre-and postwar years is the crucial role played by modern media in transmitting sensationalized violence. Furthermore, the "securitization" of the working class exacerbated social tensions and led to a radicalization of discursive violence. Thirdly, ideologically motivated violence became more widespread: though in the prewar years the boundary between ideological and purely economic motives was sometimes blurred, the ideological component was heightened after 1918. These three dimensions foreshadowed the escalation of violence-in terms of structure, not quantity-in the postwar years.