Although property rights are the cornerstone of capitalist economics, throughout history existing claims have been frequently overturned and redefined by revolution. A fundamental question for economists is what makes revolutions more likely to occur. A large literature has found contradictory evidence for the effect of income and income inequality on revolt, possibly owing to omitted variable bias. The primary innovation of the paper is to tackle this problem by introducting a new panel data set derived from surveys of revolutionary support across one-quarter of a million randomly sampled individuals. This allows one to control for unobserved fixed effects. The regressions are based on a choice-theoretic model of revolt. After controlling ...