Walter analyzes the history of American radicals of the left (socialists, communists, and radical liberals) from their emergence as an opinion-shaping force during the Great Depression to the present, and concludes that theirs is a fundamentally negative view of American social and political history. Walter argues that radical leftists have blunted reasonable political policy and prevented the achievement of desirable social goals, and that their dissidence combines a naive faith in revolutionary leaders, an unrealistic hope for perfect social justice, and an implacable hatred of free enterprise. According to Walter, radical leftists, despite often noble intentions, have been a destructive force in American history.The Rise and Fall of Leftist Radicalism in America attempts to understand left-wing radicalism by viewing the movement as a whole, as it reacted to the central national and international events of the last sixty years. In particular, Walter discusses labor agitation in the 1930s and 1940s; radical leftist support of the Soviet Union, Cuba, and China; McCarthyism; opposition to the war in Vietnam; and today's pre-eminent radical cause, environmentalism. This volume is recommended for political scientists, historians, and political philosophers.