Donatella della Porta is Professor and Dean of the Faculty of Political and Social Sciences and Director of the Centre for Social Movements Studies at the Scuola Normale Superiore, Italy. Her recent books include How Social Movements Can Save Democracy: Democratic Innovations from Below; Social Movements: An Introduction; Discursive Turns and Critical Junctures: Debating Citizenship after the Charlie Hebdo Attacks; and Where Did the Revolution Go? Contentious Politics and the Quality of Democracy. Niccolò Bertuzzi is Postdoctoral Researcher in the School of International Studies at the University of Trento, Italy. Daniela Chironi is Research Fellow in the Faculty of Political and Social Sciences at the Scuola Normale Superiore, Italy. Chiara Milan is Research Fellow in the Faculty of Political and Social Sciences at the Scuola Normale Superiore, Italy. Martín Portos is CONEX-Plus Marie Curie Fellow in the Department of Social Sciences at Universidad Carlos III de Madrid, Spain. He is the author of Grievances and Public Protest: Political Mobilisation in Spain in the Age of Austerity. Lorenzo Zamponi is Assistant Professor in the Faculty of Political and Social Sciences at the Scuola Normale Superiore, Italy.