Donatella della Porta is Professor of Political Science and Dean of the Faculty of Political and Social Sciences at the Scuola Normale Superiore, Florence, Italy. She is also Director of the PhD program in Political Science and Sociology, and she leads the Center on Social Movement Studies (Cosmos). She has authored and edited many books, journal articles and contributions in edited volumes. Recent publications include Where did the Revolution go? (2017) and Legacies and Memories in Movements (2018).
Mario Diani is Professor and Chair of the Department of Sociology and Social Research, University of Trento, Italy. He was formerly ICREA Research Professor in the Department of Political and Social Sciences of Universitat Pompeu Fabra, Barcelona from 2010-2012, and Professor of Sociology at Strathclyde University in Glasgow from 1996-2001. His publications include The Cement of Civil Society: Studying Networks in Localities (2015) and articles in leading journals such as American Sociological Review and American Journal of Sociology.

Foreword to the Third Edition vi
Chapter 1 The Study of Social Movements: Recurring Questions, (Partially) Changing Answers 1
Chapter 2 Social Changes and Social Movements 31
Chapter 3 The Symbolic Dimension of Collective Action 66
Chapter 4 Collective Action and Identity 90
Chapter 5 Individuals, Networks, and Participation 113
Chapter 6 Organizations and Organizing within Social Movements 134
Chapter 7 Eventful Protests 161
Chapter 8 Political Opportunities for Social Movements 197
Chapter 9 The Effects of Social Movements 232
References 260
Index 321