Contents: Preface; Section I Theoretical Perspectives: The dynamics of violent protest: emotions, repression and disruptive deficit, Seraphim Seferiades and Hank Johnston; Protest movements and violence, Frances Fox Piven; The outcomes of political violence: ethical, theoretical, and methodological challenges, Lorenzo Bosi and Marco Guigni; Age cohorts, cognition, and collective violence, Hank Johnston. Section II Regional Perspectives: France, Germany, and United Kingdom: Political violence in Germany: trends and exploration of causes, Dieter Rucht; The 'unusual suspects': radical repertoires in consensual settings, Mario Diani; The riots: a dynamic view, Donatella della Porta and Bernard Gbikpi. Section III Comparative Perspectives: Protest and repression in democracies and autocracies: Europe, Iran, Thailand, and the Middle East 2010-2011, Jack A. Goldstone; Contemporary French and British urban riots: an exploration of the underlying political dimensions, David Waddington and Mike King; The volatility of urban riots, Marilena Simiti. Section IV The Greek December, 2008: The Greek December, 2008, Hank Johnston and Seraphim Seferiades; Along the pathways of rage: the space-time of an uprising, Loukia Kotronaki and Seraphim Seferiades; Radical minorities, a decade of contention and the Greek December 2008, Nikos Lountos; Bibliography; Index.