Exactly, then if I am a denier, I can't defend myself with arguments because there is law to just prevent anyone to do any public attempt of demonstration.
But I am allowed to invite you in my private home to have a debate with you and try to explain you why I don't believe it.
There's nothing wrong with talking about the Holocaust.
Denying it, on the hand, is horrific.
Denial won't be tolerated here. There's nothing wrong with the topic at hand.