We used to condemn Hitler and Nazis, but now that's considered insufficient. Imitating Hitler as mockery is now treated as a violation of taboo, reason for someone to be shunned.

This reminds me of the 1942 US propaganda movie, To Be Or Not To Be, which features a fictional Polish Hitler-impersonator. He is such a capable impersonator that he can fool even Germans, which proves useful for fighting them — in a comedy, at least.

Director Ernst Lubitsch was a Jew born in Germany, and he must have thought of Hitler as the worst of enemies. But he saw no wrong in presenting a Hitler-impersonator, if that would help to defeat Hitler.