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
Red Army Faction being ostracized by the rest of the group. There is, however, evidence to the contrary of this hypothesis. During the trial, more attacks took place. One of these was on 7 April 1977, when Federal Prosecutor Siegfried Buback, his driver, and his bodyguard were shot and killed by two RAF members while waiting at a red traffic light. Buback, who had been a Nazi member during WWII, was considered by RAF as one of the key persons for their trial. Among other things, two years earlier, while being interviewed by "Stern" magazine, he stated that "Persons like Baader don't deserve