Original sentence: Berndt Andreas Baader (6 May 1943 – 18 October 1977) was one of the first leaders of the West German left-wing militant organization Red Army Faction (RAF), also commonly known as the Baader-Meinhof Group
Edited sentence: Berndt Andreas Baader (6 May 1943 – 18 October 1977) was one of the first leaders of the West German far-left militant terrorist organization Red Army Faction (RAF), also commonly known as the Baader-Meinhof Group