The Italian Communist Party (Italian: Partito Comunista Italiano, PCI) was a communist political party in Italy.. The PCI was founded as Communist Party of Italy on 21 January 1921 in Livorno by seceding from the Italian Socialist Party (PSI). Amadeo Bordiga, Antonio Gramsci, and Nicola Bombacci led the split. Outlawed during the Fascist regime, the party played a major role in the …

The Italian Socialist Party (Italian: Partito Socialista Italiano, PSI) was a socialist and later social-democratic political party in Italy, whose history stretched for longer than a century, making it one of the longest-living parties of the country.. Founded in Genoa in 1892, the PSI dominated the Italian left until after World War II, when it was eclipsed in status by the Italian Communist ...