From #BlackLivesMatter to Trump #Resistance, from the Arab Spring to the failed Turkish coup, the world has been captivated by the social movements of the digital era. Is social media truly changing the nature of the modern protest, or is it merely updating the ways in which we observe them? And what does all this mean in the age of the Tweeter-In-Chief? Zeynep Tufekci examines the trajectories of these modern protests—how they form and their potential for prompting change.