Like other groups associated with social movements, rape crisis centers have been judged co-optive by some and progressive by others. This article argues that organizational theory yields fuller explanations of their dynamics and character. In a case study, two subcultures—dubbed the politicized and service perspectives—developed and epitomized fundamentally different approaches to sexual violence. These subcultures emerged for a number of reasons, including the organization's goals, the character of the fiminist movement, and organizational features such as permeability, a broad constituency, a (...) collective goods orientation, and an emphasis on open discourse. This article argues that similar organizational and environmental features in rape crisis centers and other social movement-related organizations are associated with organizational fluidity and conflict. While these groups may not be cohesive and stable actors for broad social change, they contribute incrementally to long-term shifts in gendered social structures. (shrink)