This article examines recent Brazilian rural labor and agricultural history. It identifies three broad periods for analysis in the postwar era: the 1940s to 1960s, the 1960s to 1980s, and a third period that dates roughly from the promulgation of Brazil's new constitution in 1988 to the present. Using primary and secondary sources the article analyzes recent agrarian transformations associated with globalization, including the organized response of workers and farmers to the loss of millions farm livelihoods. It explains the rise of an autonomous peasant movement in the late twentieth century and describes the recent development of a polemic between a peasant vision of expanded family farming and the agricultural capitalist model promoted by powerful agribusiness interests.