Marco Giugni is Professor at the Department of Political Science and International Relations and Director of the Institute of Citizenship Studies (InCite) at the University of Geneva, Switzerland. His research interests focus on social movements and protests, social exclusion and the participation of disadvantaged and discriminated groups, such as the unemployed and immigrants.

Maria T. Grasso is Professor at the Department of Politics, University of Sheffield, United Kingdom. She is the author of Generations, Political Participation and Social Change in Western Europe (2016) and co-editor of Austerity and Protest: Popular Contention in Times of Economic Crisis (with M. Giugni, 2015). Her research focuses on political sociology and political engagement.