Charles Walton, Policing Public Opinion in the French Revolution: The Culture of Calumny and the Problem of Free Speech.  Oxford and New York: Oxford University Press, 2009.  xiii + 334 pp.  Figures, notes, bibliography, and index.  $49.95 U.S. (cl).  ISBN 0-19-536775-1. In this impressive first book, Charles Walton explores the fate of free speech […]