The article states:
Essentially, the courts are trying him for being stationed at Auschwitz, not for any evidence of actual wrong doing. I'm all about trying war criminals with evidence for their crimes, but the German government rounding up everyone who happened to be ordered to Auschwitz by the German government, and trying them for murder, is absolutely absurd.A court decided that by being a worker at a concentration camp he was guilty of being an accessory to murder. This meant that courts did not have to prove active participation in killing to find a suspect guilty of murder, BBC Berlin correspondent Stephen Evans reports.
One of the guys being tried was 19 at the time. Likely fresh off the train to his first station when the Soviets arrived. How many actual trigger-men did they need? The camp is huge, only a small fraction of those stationed there had actually anything to do with the extermination process. Why is that information completely irrelevant? How is manning a guard post the same as murder?