Since 2011, the world has been a deeply contentious place. Although armed insurgencies rage across the Middle East, the Sahel and Southern Asia, violent civil conflicts are no longer the primary way that people seek to redress their grievances. Instead, from Tunis to Tahrir Square, from Zuccotti Park to Ferguson, from Burkina Faso to Hong Kong, movements worldwide have drawn on the lessons of Gandhi, King and everyday activists at home and abroad to push for change…

Erica Chenoweth and Maria J. Stephan