I have removed your signature seeing people took offense from it. You may be granted the benefit of doubt that it wasn't an actual expression of support for Hitler, but the sensitive thing is to remove such quotes when/if people take offense - and especially after being told by a moderator. Consider yourself warned.
Why are you arguing? You don't have a choice in the matter. Remove the quote.
I am under the impression that you are a troll and that you have the Hitler quote in your signature because you want to antagonise people. It is obviously inappropriate for you to carry such a quote on a far left-wing forum that has an automatic ban policy for Nazis and Fascists. Until it has been decided how to respond to your membership generally, I'm telling you to remove it from your signature. You can either do that yourself or one of the Admins can do it for you. It's entirely up to you.
Remove the Hitler quote from your signature.