Studies of state repression of protest have focused on theories of threat and weakness, in which states repress movements that threaten state authority or elite interest or movements that lack organizational or political strength. Empirical studies have most often used regression analysis of protest-event datasets. This paper proposes qualitative comparative analysis (QCA) as an alternative approach to protest-event data that retains more qualitative complexity and captures the conjunctural and heterogeneous nature of causation during events. The paper applies both methods to protest data from the United States (1963-1973). While both methods provide strong evidence for the threat and weakness hypotheses, QCA more effectively illustrates how combinations of threat and weakness factors increase the risk of repression. The paper argues that QCA is a viable alternative approach to event data, but it should also be seen as a valuable complementary method that can improve regression-based approaches.