This half-semester course covers political science research on foundational and new topics in the study of contentious politics. These topics include: a) popular protest and mass mobilization, b) tactics and repertoires in political uprisings and revolutions, c) framing, identity, and political opportunities, d) state responses and repression of collective action, and e) the more recent role of Information and Communications Technology. The course does not focus on a particular region of the world, but will draw heavily from non-democratic settings and recent uprisings (e.g., Arab Spring). The course serves as one of the core modules comprising the Comparative Politics Proseminar and is primarily intended for PhD students in Political Science. Students from other graduate programs are also welcome.