Asef Bayat is the Catherine and Bruce Bastian Professor of Global and Transnational Studies at the Department of Sociology, University of Illinois, Urbana-Champaign. In his new book, “Revolution without revolutionaries: making sense of the Arab Spring” (Stanford University Press, 2017), he explores the meaning of revolutionary struggle in the post-Cold War era, a “time when the very idea of revolution had dissipated.”