The Party was founded in 1921, establishing contacts with the Communist International (Comintern) in 1922, and became in 1923 the Portuguese section of the Comintern. Made illegal after a coup in the late 1920s, the PCP played a major role in the opposition to the dictatorial regime of António de Oliveira Salazar. During the five-decades-long dictatorship, the party was constantly suppressed by the political police, the PIDE, which forced its members to live in clandestine status under the threat of arrest, torture, and murder. After the Carnation Revolution in 1974, which overthrew the 48-year regime, the 36 members of party's Central Committee had, in the aggregate, experienced more than 300 years in jail.