Dirk Schumann is Professor of Modern and Contemporary History at Georg-August University, Göttingen. His most recent books include Raising Citizens in the "Century of the Child“: The United States and German Central Europe in Comparative Perspective (Berghahn, 2010, edited), Political Violence in the Weimar Republic, 1918–1933: Fight for the Streets and Fear of Civil War (Berghahn, 2009).