Red Army Faction May 1972, members of the Baader-Meinhof gang armed six bombs in the Axel Springer Verlag in Hamburg. Only three of the six bombs exploded, but it was enough to injure 17 people. On 24 May 1972, just two weeks after the bombing of the United States headquarters in Frankfurt, the group set several car bombs off at the Campbell Barracks in Heidelberg. The bombing resulted in the death of three U.S officers and the injury of five others. On 10 November 1974, the group killed Günter von Drenkmann, the president of Germany's superior court of justice. The killing occurred after
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