, also mentioned as an appeal (or manifesto) against Commissioner Luigi Calabresi, is a document published on 13 June 1971 by the weekly L'Espresso, with which numerous politicians, journalists and intellectuals asked for the dismissal of some officials, believed to be the authors of serious omissions and negligence in ascertaining responsibility for the death of Giuseppe Pinelli, who fell from a window while he was in custody at the Milan police as part of the investigations into the Piazza Fontana bombing conducted by commissioner Calabresi, who slanderously indicated him as responsible.