"No one in their right mind would dress up as Hitler". One of my very conservative, thoroughly professional mates dressed up in SS uniform for a party back in the 80's. Nobody batted an eyelid. I had a very fetching short skirt on. Another guy had a "Too drunk to f..." t-shirt on. Great party - certainly one that stuck in my memory.
Don't get me wrong, there are things I find offensive. Violence, sexual or otherwise, particularly when inflicted on those who can't defend themselves. Child poverty. Adult Poverty. People who advocate policies likely to leave some in poverty. People who are in a position to make the world better, even if only a little, but choose not to.
Mel Brooks dressed up as Hitler in "To Be or Not To Be". He made fun of Hitler. It was funny.
But I don't trust the AFL to apply good judgement in this situation. I don't trust them to produce a fair fixture, so I can't see any reason to give them the benefit of the doubt in this case.