Finally , the PCI started to provide external support to a Christian Democratic one-party government led by Andreotti . Despite this , several radical communists in the PCI boycotted the government . There was an increase in far-left terrorism , mainly committed by the Red Brigades ( , BR ) . The BR kidnapped Aldo Moro , the then Party President of DC , on 16 March 1978 . After several consultations in the Italian Parliament , the government refused the terrorists ' conditions , and Moro was killed on 9 May 1978 . The PSI , along with the far-right Italian Social Movement ( MSI ) , increased their votes in the 1979 general election . Nevertheless , the Compromise continued but it was in decline
kidnapped Aldo Moro
Kidnapping of Aldo Moro
Historic Compromise