The Piazza Fontana massacre of 12 December 1969 is a crucial milestone in post-war Italian history. It was on that date that the criminal intentions of a political class — which demonstrated it would shrink from nothing to cling on to power in the face of ‘the onward march of communism’ — was made flesh. This class did not baulk at leaving a trail of corpses in its wake in order to prevent its leadership being called into question. The Piazza Fontana massacre is not some ‘obscure episode’ in Italy’s history — ‘the nightfall of the republic’. It is a clearly defined chapter whose narrative is that dead bodies are preferable to political change and over the years that followed many more would perish — mainly at the hands of the right, but also some at the hands of the left. It was a perverted game. The right had attacked, therefore the left had a duty to retaliate, thereby cranking up the ‘index of conflict’.