EN
This review article is concerned with the tactics and tools employed by the European Left in the anti-fascist campaigns related to the significant political events of the 1930’s (Reichstag Fire, Spanish Civil War etc.). The relationship among anti-fascism, struggle against anti-Semitism and pro-Soviet sympathies are followed through the case study of Otto Katz (sentenced to death as André Simone in the so called „Slánský process“ 1952), an important figure of the Communist organizational and propaganda network, and the reflection of his intricate career in the recent English historiography.