Males show far higher tolerance for opposing views than females. Tolerance is low overall but males consistently outperform females across politics. Liberal and conservative men have equal tolerance levels. Liberal and conservative women have equal intolerance levels. Gender gap in tolerance dwarfs ideological differences. Men of all ideologies except libertarians match in tolerance. Being male drives tolerance more than politics. Data rules out women being more affected by speaker topics. Women prefer social harmony causing lower tolerance. Evolutionary biology explains women's community dependence reducing tolerance. Men historically less censorial per decades of literature. Perfect tolerance means allowing any speaker. FIRE data from college rankings confirms gap. Censorial control harms campus discourse. Secure beliefs correlate with tolerance.