Majken Jul Sørensen is an Associate Professor of Sociology at Karlstad University, Sweden. Stellan Vinthagen is Professor of Sociology and the Inaugural Endowed Chair in the Study of Nonviolent Direct Action and Civil Resistance at the University of Massachusetts, Amherst, where he directs the Resistance Studies Initiative. He is Editor of the Journal of Resistance Studies, and Co-Leader of the Resistance Studies Group at University of Gothenburg, Sweden.