Ivan Jablonka is Professor of Contemporary History at the University Paris 13, France, and Editor-in-Chief of La Vie des id¿/Books and Ideas. This book, first published in French, won the 2012 Prix du S¿t du livre d'histoire , Prix Guizot de l'Acad¿e fran¿se , and the Prix Augustin- Thierry des Rendez-Vous de l'Histoire de Blois.