The document discusses key factors that contribute to the formation and success of mass social movements. It notes that movements usually begin with a shared grievance among many people. While grievances may develop slowly over time, new technologies now allow unprecedented numbers of people worldwide to demand change simultaneously. Successful movements also learn from previous efforts and rely on diverse participation under a common cause. However, they often struggle to sustain themselves long-term beyond an initial goal due to weak organization and funding after the initial momentum dies down.