I Need Some Ideas for a Hitler Themed 4th Birthday Party?

My son is turning four and is currently obsessed with Hitler. We decided to throw him a Hitler themed party for his fourth birthday. I have a few ideas but I need some more. We were thinking that the kids could come with little moustaches on, we could have candles and shape the cake like a swastika. We wouldn't invite Jews of course so no one gets offended. I was telling the my son's kindergarten teacher about it the other day as well and she told me it wasn't a good idea. Should we still throw this party or would some sort of do-gooder whine about it?