What about in the cases of satire? I make a joke about the holocaust not happening in a comedy club in Berlin, is that illegal? I think with it being such a slippery slope is why Americans take the stance they do.
It's not a slippery slope. It's a narrowly defined offense tied to a specific historical crime: the state-organized genocide carried out by Nazi Germany. It's a response to a specific historical responsibility.
The decisive factor is whether the joke attacks the ideology or reinforces it. So if a comedian in Berlin says "the Holocaust didn’t happen" as a punchline, and it comes across as actual denial or trivialization, that can be illegal.
