There are, of course, many ethical reasons to use nonviolent strategies. But compelling research by Erica Chenoweth, a political scientist at Harvard University, confirms that civil disobedience is not only the moral choice; it is also the most powerful way of shaping world politics – by a long way.

Looking at hundreds of campaigns over the last century, Chenoweth found that nonviolent campaigns are twice as likely to achieve their goals as violent campaigns. And although the exact dynamics will depend on many factors, she has shown it takes around 3.5% of the population actively participating in the protests to ensure serious political change.