This article addresses a critical gap in the study of victimhood in historical grievance cases by examining the transformation from passive and powerless victims to active, empowered victim identities through litigation. Focusing on the aftermath of the 1947-1954 political repression and violence in Jeju Island, South Korea, known as the Jeju April 3 Incident, this study draws on archival research and in-depth interviews with survivors, bereaved family members, activists, and lawyers. It demonstrates how litigation plays a crucial role in empowering victims by allowing survivors and families to actively engage in the legal process, where they publicly perform, socialize, and symbolically mobilize their narratives. The Jeju April 3 trials show how survivors and bereaved families, once stigmatized as “rioters” or “families of rioters,” reclaimed their dignity and transitioned from passive subjects of injustice into active agents of social change. By highlighting how court proceedings serve as crucial spaces for marginalized individuals, this study contributes to the scholarship on legal mobilization and identity transformation, particularly in the contexts of state violence and historical grievances.