Members of the Red Army Faction Socialist Patients' Collective (SPK) and Movement 2 June (J2M). The SPK, the leftist, 'therapy-through-violence' group, dissolved in 1971, and those members who had turned militant forged links and joined with the Baader-Meinhof Gang. Brigitte Mohnhaupt, Klaus Jünschke Carmen Roll, and Gerhard Müller had already joined as part of the first generation of the RAF but originally started in SPK. Siegfried Hausner (24 January 1952 – 5 May 1975) was a leading member of the SPK especially involved with explosives. He took part in a bombing of the Axel Springer Verlag in 1971 and was the leader of the West German
Revolutionary Cells (German group) Revolutionary Cells (German group) The Revolutionary Cells (, abbreviated RZ) were a self-described "urban guerilla" organisation, that was active between 1973 and 1995, and was described in the early 1980s as one of Germany's most dangerous leftist terrorist groups by the West German Interior Ministry. According to the office of the German Federal Prosecutor, the Revolutionary Cells claimed responsibility for 186 attacks, of which 40 were committed in West Berlin. The Revolutionary Cells are perhaps known for hijacking an Air France flight in cooperation with the Popular Front for the Liberation of Palestine – External Operations (PFLP-EO) and diverting it