From protests around climate change and immigrant rights, to Occupy, the Arab Spring, and #BlackLivesMatter, a new generation is unleashing strategic nonviolent action to shape public debate and force political change. When mass movements erupt onto our television screens, the media consistently portrays them as being spontaneous and unpredictable. Yet, in this book, Mark and Paul Engler look at the hidden art behind such outbursts of protest, examining core principles that have...