Though it defies consensus, between 1900 and 2006, campaigns of nonviolent resistance were more than twice as effective as their violent counterparts. Attracting impressive support from citizens that helps separate regimes from their main sources of power, these campaigns have produced remarkable results, even in the contexts of Iran, the Palestinian Territories, the Philippines, and Burma.
Chenoweth, Erica, and Maria J. Stephan. Why Civil Resistance Works. Columbia University Press, 2011.