Of course it should not be a crime, and if it was on what level would it be? Shoplifting, Burglary, Bank robbery, Manslaughter, Murder, how serious?
Would it be a crime to deny Darwins theory of evolution? after all it was only one man's theory 150 years ago.
Would it also be a crime to deny the world is round?
One thing that always mystifies me regarding the Holocaust and it is this,
There is a piece of film footage that is shown over and over again : There is a boy standing in the doorway of a railway truck, and he has got his arm stretched out helping to pull someone into the truck. There is nothing unusual in that one might say but, the next scene is shot from the interior of the truck, once again showing the boy helping someone into the truck.
If a German soldier had filmed this boy, do you think he would have then got into a truck full of Jews to take the interior shots? And no Jew would have been allowed to take a movie camera aboard the train.