Mr. Osborn uses psycho-analysis to explain to Socialists and Communists the unconscious motives of their opponents. Fascism, both German and Italian, and its various manifestations, Nationalism, the Corporate State, Demagogy, Leader-worship, Hitler's God Complex, Anti-Semitism, Racial theory and Sadism, are all discussed. He also deals with Trotskyism, and gives his theory of the Russian treason trials. In an Appendix he explains why psycho-analysis is more consistent with Marxian ideology than is behaviourism, and defends Freud against the charge of Idealism. There is a great deal of discussion of Fascism from the political and economic standpoints, and such psycho-analytic theory as is used is elementary. The sections dealing with Leader-worship and Demagogy contain no reference to Group Psychology, nor is the castration