Come on. We all know this happened. Don't even try to deny it. If you feel shame about what Germany did to the people around Europe, I understand. But don't act like it never happened and try to call the rest of the world liars. I think we were all there for it. Remember Hitler? Yes, he was Austrian, but he joined the German military and proceeded to eradicate the "unpure". That crazy man.
While many do not agree with these people who deny the Holocaust, they have a basic constitutional right to freedom of speech. It is not creating a clear and present danger to any one or any thing, so they should have a right to peacefully have their groups on Facebook.