Tomas Rothaus is a lifelong anarchist and antifascist as well as an athlete and a father. He was born in Buenos Aires, Argentina, and his nomadic life led to him moving around with stops in Athens, Boston, Buenos Aires, and Paris, followed by longer stints in Germany, and more recently returning to Argentina. He has been involved with a broad range of organizations including the CNT-Vignoles, Collectif Anti Expulsions (Anti Deportation Collective), Barricada Collective, Northeastern Federation of Anarcho-Communists, Antifaschistische Linke International, and Acción Antifascista Buenos Aires. Over the past twenty plus years he has been an active participant in militant demonstrations and antifascist mobilizations ranging from the 2001 Bush inauguration, the FTAA summit in Quebec, the 2007 G8 summit in Rostock, and the 2011 mobilization to stop the march of several thousand neo-Nazis in the city of Dresden.

Mark Bray is a historian of Modern Europe at Rutgers University and the author of Antifa: The Antifascist Handbook and The Anarchist Inquisition: Assassins, Activists, and Martyrs in Spain and France and the coeditor of Anarchist Education and the Modern School: A Francisco Ferrer Reader.