Sidney Tarrow is Maxwell M. Upson Professor of Government and Professor of Sociology at Cornell University. Tarrow's first book was Peasant Communism in Southern Italy (Yale, 1967). In the 1980s, after a brief foray into comparative local politics, he returned to social movements with a collaborative volume with B. Klandermans and H. Kriesi, Between Structure and Action (JAI, 1988); then to a reconstruction of Italian protest cycle of the late 1960s and early 1970s, Democracy and Disorder (Oxford, 1989). His most recent books are Power in Movement (Cambridge, 1994, 1998) (with Doug McAdam and