Sidney Tarrow (PhD, University of California, Berkeley, 1965) is Maxwell M. Upson Professor of Government and Professor of Sociology at Cornell University. His recent books are Power in Movement (revised and updated edition, 2011); Contentious Politics (with the late Charles Tilly, 2006); The New Transnational Activism (Cambridge University Press, 2005); Transnational Protest and Global Activism (co-edited with Donatella della Porta, 2004); Dynamics of Contention (with Doug McAdam and Charles Tilly, 2001); and Contentious Europeans (with Doug Imig, 2001). He is currently working on war, state building and human rights.