By Erica Chenoweth | TED Talks – Transcend Media Service 

Between 1900-2006, campaigns of nonviolent civil resistance were twice as successful as violent campaigns. Erica talks about her research on the impressive historical record of civil resistance in the 20th century and discusses the promise of unarmed struggle in the 21st century. In addition to explaining why nonviolent resistance has been so effective, she also shares some lessons learned about why it sometimes fails.