Michael T. Heaney, Assistant Professor of Political Science at the University of Michigan, discusses his study (with Fabio Rojas) “The Partisan Dynamics of Contention: Demobilization of the Antiwar Movement in the United States, 2007-2009;” how Democrats abandoned the antiwar movement to fawn over the “nonthreatening” Obama; and the on-the-ground research behind the study, consisting of 5,398 surveys of demonstrators at antiwar protests held in major American cities over the course of three...