My advice for public figures: don't ever talk about Hitler. Or Nazis. Ever. Not even in your native tongue. No matter how ironical, witty or cute you think you are being, you are making a complete ass of yourself and inviting disaster.
That said, I found my sentiments on the subject summed up nicely by Tristan Sinns at Planet Fury:
"Many of us groaned at the comments made by Lars von Trier during an interview at the last Cannes Film Festival; but now France is considering actually throwing the man in prison." Read more
Jailed For Fiction?