Fascists and leftists fought on the streets during this period as the two factions competed to gain power in Italy. The already tense political environment in Italy escalated into major civil unrest when fascists began attacking their rivals, beginning on 15 April 1919 with fascists attacking the offices of the Italian Socialist Party's newspaper Avanti![1]
The next act of violence was the assassination of socialist deputy Giacomo Matteotti by the fascist militant Amerigo Dumini in 1924. Armando Casalini, a National Fascist Party deputy, was killed on a tramway in retaliation for Matteotti's murder by the anti-fascist Giovanni Corvi. This was followed by a fascist takeover of the Italian government and multiple assassination attempts were made against Mussolini in 1926, with the last attempt on 31 October 1926. On 9 November 1926, the fascist government initiated emergency powers, which resulted in the arrest of multiple anti-fascists including communist Antonio Gramsci. Afterwards, serious opposition to the Fascist Italy regime collapsed.
Fascist: Mussolini led the fascists who opposed and engaged in violence with international leftists who were gaining prominence in the late 1910s and early 1920s.
Arditi del Popolo: 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, such as socialists, futurists, republicans, and syndicalists.[3]