Donatella della Porta, Professor of Political Science, Faculty of Political and Social Sciences, Scuola Normale Superiore, Riccardo Emilio Chesta, Post-Doctoral Researcher, Faculty of Political and Social Sciences, Scuola Normale Superiore, Daniela Chironi, Assistant Professor of Political Science, Faculty of Political and Social Science, Scuola Normale Superiore, Stella Christou, Research Fellow in Political Sociology, Faculty of Political and Social Sciences, Scuola Normale Superiore and Andrea Felicetti, Senior Assistant Professor of Political Science, Department of Political Science, Law and International Studies, University of Padua, Italy