The Socialist Party of Italy (PSI)

Founded: 14th August 1892.

Banned: 6 November 1926

Founders: Filippo Turati, Andrea Costa, Anna Kuliscioff

Major belief: Democratic Socialism

Party Development until 1922:

The Italian Socialist Party was founded in 1892 as the Party of Italian Workers.
It included some delegates of workers' associations and political parties, such as the Italian Workers' Party and the Milanese Socialist League.
During its early years, it was persecuted by the Italian government due to its policy of Transformismo.

Impact on the political development of Italy

The PSI was divided into two major branches– the Reformists and the Maximalists. One of the reasons for division was the opinions on joining the First World War.
Mussolini and a group of others were expelled from the party as they were part of the syndicalist faction.
Most of those with similar views who were expelled joined the Italian Fasces of Combat, which in 1921, Mussolini renamed "The Italian Fascist Party" in 1921.

Definitions:

Democratic socialism: the belief that a government and its economy should be run by its community together, and its people should also choose its own government through voting.