Déborah Cohen is Senior Lecturer of Early-Modern French History at Rouen University, France. She is a specialist in the popular history of France, covering the modern period and the Revolution. She works on the forms of political participation by the dominated classes and has just completed a project on civic denunciation during the French Revolution, as a form of surveillance of possible abuses and excesses by governments.Federico Tarragoni is Professor of Political Sociology at Caen University, France and Fellow of the Institut Universitaire de France (IUF). He is a leading specialist in populism, on which he has introduced an innovative socio-historical approach. He also works on contemporary democratic activism in square-occupying movements (Indignados, Occupy Wall Street, Nuit debout, Aganaktisménoi). He received the Schneider Aguirre Basualdo Prize in Social Sciences from the Chancellerie des Universités de Paris and was formerly Dean of the Faculty of Humanities and Social Sciences at the University Paris Cité.