Sign up now: Get ST's newsletters delivered to your inbox FILE PHOTO: Defendant former German lawyer Horst Mahler, with links to the far-right, awaits the start of proceedings in his trial in a court room in Munich February 17, 2009. REUTERS/Michaela Rehle/File Photo BERLIN - Horst Mahler, who co-founded the leftist Red Army Faction guerrilla group suspected of killing dozens of prominent West Germans and later became a far-right ideologist and Holocaust denier, has died in Berlin, the New York Times reported on Thursday, citing Mahler's lawyer. He was 89. Mahler spent 10 years in prison for his involvement with...