A clue to its identity might have been gained from a rash of anti-O.A.S. posters that had appeared overnight throughout Algiers, to the surprise of its inhabitants, and bearing the initials M.P.C. The Mouvement pour la Communauté had been launched earlier in the year to boost de Gaulle’s Algerian policy, receiving substantial funds from Morin’s Délégation-Générale for its activities. Though its function was essentially political, with the growing ascendance of the O.A.S. its secretary-general in Algiers, a former radio producer called Lucien Bitterlin, decided that something more than words was now called for. He began gathering around him a group of strong-arm men. Bitterlin claims he did not demur when a colonel in Military Security branch supplied him with weapons, explosives and permits to move about during the curfew, and asked him to “plastiquer several activist cafés in Algiers” — in itself an extraordinary revelation of the state of anarchy and lawlessness already prevailing in the cities of Algeria.

XREF: Connects to the broader narrative of O.A.S. and state-sponsored violence in Algeria during the Algerian War.

Horne, Alistair, A Savage War of Peace- Alge…, loc. 1496