Giacinto Menotti Serrati (25 November 1872 – 10 May 1926) was an Italian communist politician and newspaper editor.
Serrati was a central leader of the Italian Socialist Party (PSI), editor of the paper Avanti!
[1] He was an active member of the Zimmerwald Movement and, after the October Revolution of 1917, Serrati led the PSI into joining the Comintern.
[2] In 1924 he nonetheless led the left wing of the PSI into fusion with the Communist Party, being elected to the latter's Central Committee.
His funeral represented the last major public demonstration of the labor movement before the enactment of the Leggi fascistissime (fascist laws).