Auto-critiques and expurgations in the paulistas'revolutionary environments (1928-1935).

The dissensions occurred in the paulistas's revolutionary circles, in the thirties, punctuated the history of the Communist Party of Brasil and of the other left-wing streams, causing censorships and auto-critiques directed to many of its members. The revolutionary determination of the comrades, developed in the culture of the subversion ghettos, propitiated the formation of the survival strategies, of which, the most perverse, was the methodical doubt that surrounded the loyalty of the journey companions. In the party's meetings, presumed or real betrayals played a big role in the discussions. Theoretical impurities, being involved with the trotskyist, little bourgeois adhesions, collaborationism, disloyalty to the party, poisoned the communists' relations. Information derived from diverse sources - letters, minutes of meetings, circulars, officers' handbooks - allow us to analyze this process, submitted to a almost complete silence of the Brazilian historiography.