The Comintern had decided in 1935 that, in response to the growth of Fascism, popular fronts allying Communist parties with other anti-Fascist parties including Socialist and even bourgeois parties were advisable. In Spain, it was a coalition between leftist republicans and workers' organizations to defend social reforms of the first government (1931–1933) of the Second Spanish Republic, and liberate the prisoners, political prisoners according with the front propaganda, held since the Asturian October Revolution (1934).