Every time Josef Schütz tottered into the Brandenburg sports hall, he surveyed the assembled crowd and announced: “Good morning to all.” It was no different on his last visit to the hall on Tuesday even though, for the frail 101-year-old in an oversized green shirt and blue striped trousers, it would prove to be a very bad morning. The centenarian with a grey mane of hair, known to his family as Josi, was found guilty of being a “knowing and willing” accessory to murder on 3,518 counts during three years as a guard at the Sachsenhausen concentration camp in Oranienburg,...