Communist: Amadeo Bordiga and Antonio Gramsci were leaders of the Communist Party of Italy in this period whose members engaged in civil violence against Fascists. Fascist: Benito Mussolini led the Fascists who opposed and engaged in violence with international leftists which were gaining prominence in the late 1910s and early 1920s. Arditi del Popolo (People's Militia): Guido Picelli was the deputy of a coalition formed in 1921 between various anti-Fascist groups including Malatesta's anarchists and Gramsci's communists among others including futurists, republicans, and syndicalists.[5]