Platformists attack

 addition to the incorporation of theoretical elements of Marxism, such as dialectical materialism,[90] an already controversial issue, the FCL was involved in very complicated episodes. The first took place in 1955, with the decision to present candidates for the 1956 electoral campaign, an effort that was subsequently the object of self-criticism by its own members and that at the time earned criticism from both synthesists and important platformist sectors, like those who later formed the Anarchist Groups of Revolutionary Action [Grupos Anarquistas de Acción Revolucionaria] (GAAR) and the newspaper Rojo y Negro. The second was proximity with André Marty, candidate in the 1956 elections together with Fontenis and others from the FCL. Marty was a former member of the French Communist Party who during the Spanish Revolution had been responsible for the International Brigades and had ordered the slaughter of dozens of anarchists.[91]

In Italy, the formation of Anarchist Groups of Proletarian Action (GAAP) was carried out by a platformist sector of the Italian Anarchist Federation. Expelled in 1950, this sector—who criticized the reformism and idealism of its organization of origin and advocated the creation of an anarchist party inspired by the Platform—acted as GAAP until 1956, the year in which it merged with Marxist groups to form Communist Action, a far-left sector of the Italian Communist Party that subsequently contributed to the creation of the Movement of the Communist Left