Those are the words, the motivations, and mindset of a man that set out a plan to exterminate an entire group of people. Why should they be offended by that, it happened and shouldn't be forgotten. It should be stood up to and understood, even better through debate and it's clearly acting. Not the best though, see Bruno Ganz of Hitler parody meme fame in Downfall for that. Clearly within the scope of the "debate".
Poor taste? Yes. Was that the point of the event? Apparently so.
Hitler was offensive, go to Auschwitz and see what he and his Nazi chums did in all its grotesqueness. Doing an impression (if that even, it could even be seen as a caricature) at a student union is a bit risky these days with all the actual little
Hitlers Stalins around, but still a far cry from the atrocities committed in the name of Adolf Hitler. I find that offensive, and I'm not easy to offend.
Should be called a block/deny list any way. Surely blacklist is offensive as it implies a negative on the word "black" as opposed to "white". Racist union President.
EDIT: Or am I missing the point here, and how these debates work; should the chair have intervened as the impression was in "bad taste"? The context is missing in the article and the video above.