Aventine Secession (20th century)

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The Aventine Secession was the withdrawal of the parliament opposition, mainly comprising the Italian Socialist Party, Italian Liberal Party, Italian People's Party and Italian Communist Party, from the Chamber of Deputies in 1924–25, following the murder of the deputy Giacomo Matteotti by fascists on 10 June 1924.

The secession was named after the Aventine Secession in ancient Rome. This act of protest heralded the assumption of total power by Benito Mussolini and his National Fascist Party and the establishment of a one-party dictatorship in Italy. It was unsuccessful in opposing the National Fascist Party, and after two years the Chamber of Deputies ruled that the 123 Aventine deputies had forfeited their positions. In the following years, many of the "Aventinian" deputies were forced into exile or imprisoned.