If you want to overthrow a dictator, resist an authoritarian regime, or create a movement that can change the national status quo, you don't need half the country, you only need 3.5 percent of the population to join – but there are some caveats, and Erica Chenoweth whose research led to the discovery of the 3.5 Percent Rule, explains them to us in this episode.
Why Civil Resistance Works (the paper)