How do institutionalized memories of historical trauma shape contemporary political attitudes? This study examines how emotionally evocative reminders of past violence influence public opinion. Drawing on a survey experiment in South Korea, I test how symbolic narratives of Japanese colonial repression affect emotional responses and downstream political views. The results show that while these reminders evoke strong emotions—especially anger and fear—they do not directly alter attitudes toward national identity or policy. Instead, anger, more than fear, consistently predicts both inclusive orientations, such as increased national pride, and exclusive preferences, including support for protectionist policies. These findings suggest that historical trauma influences political behavior not by providing new information but by activating internalized emotional frameworks. The study contributes to research on the legacy of political violence by identifying discrete emotions as key mechanisms linking collective victimhood to divergent political responses.