This one, simple fact shows that everything the modern deniers try to claim is a post hoc contrivance. From 1945 onwards, thousands of Nazis were captured and hundreds tried for their part in the Holocaust and other crimes against humanity. They tried to pretend they were someone else, they tried to pretend they didn’t know what was happening, they tried to pretend they didn’t have as much to do with it as others, they tried to claim they were just following orders and they tried to justify it as „the kind of thing that happens in war“. But what not one of them ever did was deny it happened.
Die Quelle gibt es leider nicht mehr (Link) – das Argument gilt nach wie vor.