On December 12th, 1969 a bomb went off at the Piazza Fontana in Milan that killed 16 people and injured 84. Railway worker and anarchist activist Giuseppe Pinelli was picked up, along with other anarchists, for questioning regarding the attack. He was held and interrogated for three days, longer than Italian law specified that people could be held without seeing a judge. Just before midnight on December 15, 1969 Pinelli was seen to fall to his death from a fourth floor window of the Milan police station. Although officially deemed a suicide, the reporter who watched the fall from the street maintained that he was pushed. Three police officers interrogating Pinelli were put under investigation in 1971 for murder but charges were dropped because of lack of evidence.
| Directing | Giovanni Bonfanti | Director |
| Writing | Pier Paolo Pasolini | Idea |
| Writing | Giovanni Bonfanti | Writer |
| Writing | Goffredo Fofi | Writer |
| Production | Giovanni Bonfanti | Producer |
| Sound | Pino Masi | Original Music Composer |
| Camera | Sebastiano Celeste | Director of Photography |
| Camera | Dmitri Nicolau | Director of Photography |
| Camera | Giuseppe Pinori | Director of Photography |
| Camera | Enzo Tosi | Director of Photography |
| Camera | Roberto Lombardi | Director of Photography |
| Editing | Giovanni Bonfanti | Editor |
| Editing | Lamberto Mancini | Editor |
| Editing | Maurizio Ponzi | Editor |
| Production | Umberto Angelucci | Production Manager |
| Directing | Fabio Pellarin | Assistant Director |
| Sound | Bruno Nappa | Sound |
| Sound | Nino Renda | Sound Mixer |
| Sound | Pasquale Rotolo | Sound |
| Directing | Pier Paolo Pasolini | Director |