December 1969: Bomb destroys the Banca Nazionale dell'Agricoltura in Piazza Fontana in Milan, killing 16 people. Although initially blamed on the left, this was the work of right-wingers intended to scare restive factory workers out of launching a Communist revolution.
1974: Bomb kills eight at a demonstration in Brescia; later in the year a train bombing in a tunnel near Bologna kills 12 more. Both are the work of right-wingers.
1976: Red Brigades commit first murder, of Genoa state prosecutor Francesco Coco (right). Nearly 100 more killings follow over the next four years.
1978: Red Brigades kidnap Aldo Moro, architect of the stillborn `historic compromise' with the Communists, near his home and kill his bodyguards. After a tense 55 days, his corpse is found in the back of a car at a spot equidistant from the Rome headquarters of the Christian Democrat and the Communist parties.
1980: Right-wing bomb kills 85 at Bologna railway station. The same year, captured Red Brigades members begin to co-operate with the police, leading to the disbandment of the group and the end of the Years of Lead.