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Political scientists Erica Chenoweth and Maria Stephan looked at a related question: Which has been more effective at producing social change: armed violent resistance or nonviolent resistance? Embedded is a question about trust: Is offering trust in the ultimate humanity of one’s opposition, even from a vulnerable position, an effective way of producing social change, and if so, is it as effective as the threat and use of violence.

Chenoweth and Stephan built a dataset of all the mass change campaigns that happened in the world between 1900 and 2006, 323 in all. They divided them into those that were violent in nature (revolutions, insurgencies, coups d’état) or primarily nonviolent in nature (boycotts, strikes, sit-ins, protest marches, stay-aways). They then assessed how effective they were as measured by whether they achieved their stated goals within a year’s time and whether there was evidence that the campaigns themselves, rather than concurrent events or other differences between the societies were responsible for change.