A longtime agitator against war and social injustice, Lawrence Wittner has been tear-gassed, threatened by police with drawn guns, charged by soldiers with fixed bayonets, spied upon by the U.S. government, arrested, and purged from his job for political -reasons. To say that this teacher-historian-activist has led an interesting life is a considerable understatement. In this absorbing memoir, Wittner traces the dramatic course of a life and career that took him from a Brooklyn boyhood in the 1940's and '50's to an education at Columbia University and the University of Wis