LOL! Gay people do not 'deny' heterosexuality. They simply don't choose it....insofar as it's a choice, anyway~Gays are heterosexuality deniers.
BTW, the national socialists I have met aren't "holocaust deniers" at all. They are more holocaust celebraters, they think it was a good idea.
Yes, the overt Nazi celebrates the Holocaust....but the covert one hides their preference under the guise of denying the event took place. The social disapproval for going public with your opinion ensures that in the US..there are far more covert NAZI's than there are covert ones.
RW Fascist ideology always appeals---to a certain sort. Industrialists are especially susceptible.