Ask Goebbels' secretayr:-
She took down every word that Goebbels uttered, both his private correspondence and his official orders, including those ordering round-ups of Jews in Berlin to please Hitler that the capital was becoming 'Jew-free'.
'I didn't know about the Holocaust. I was a stupid, politically uninterested little sausage of simple means. I only learned about the Jewish extermination programme after the war. Goebbels never mentioned it in his correspondence.
Is she, too, a denier?