Enrico Berlinguer was an Italian politician. Considered the most popular leader of the Italian Communist Party (PCI), he led the PCI as the national secretary from 1972 until his death during a tense period in Italy's history, which was marked by the Years of Lead and social conflicts, such as the Hot Autumn of 1969–1970. Berlinguer was born into a middle-class family; his father was a socialist who became a deputy and later senator. After leading the party's youth wing in his hometown, he led the PCI's youth wing, the Italian Communist Youth Federation (FGCI), at the national level from 1949 to 1956. In 1968, he was elected to the country's Chamber of Deputies, and he became the leader of the PCI in 1972; he remained a deputy until his death in 1984. Under his leadership, the number of votes for the PCI peaked. The PCI's results in 1976 remain the highest for any Italian left-wing or centre-left party both in terms of votes and vote share, and the party's results in 1984, just after his death, remain the best result for an Italian left-wing party in European elections, and were toppled, in terms of vote share in a lower-turnout election, in the 2014 European Parliament election in Italy.

The Italian Communist Party was a communist and democratic socialist political party in Italy. It was founded in Livorno as the Communist Party of Italy on 21 January 1921, when it seceded from the Italian Socialist Party (PSI), under the leadership of Amadeo Bordiga, Antonio Gramsci, and Nicola Bombacci. Outlawed during the Italian fascist regime, the party continued to operate underground and played a major role in the Italian resistance movement. The party's peaceful and national road to socialism, or the "Italian Road to Socialism", the realisation of the communist project through democracy, repudiating the use of violence and applying the Constitution of Italy in all its parts, a strategy inaugurated under Palmiro Togliatti but that some date back to Gramsci, would become the leitmotif of the party's history.