We sometimes overlook the most obvious connection between deniers, those who deny global warming, those who deny evolution and those who deny the holocaust. They suffer from the same kind of groupthink and conspiracy theories. Its not denial they say, it's debate they want, the facts are not irrefutable, there is evidence to the contrary. For a long time Bradley Smith has tried to present himself as an honest chap, a champion of intellectual freedom simply seeking an "open debate"about the "holocaust controversy [sic]."
Thus the same argumentative tactic used to deny the holocaust is used to deny evolution and used to deny climate change. It is groupthink on the right. And the argumentative style does not change, the subject of the attack does.
And it is always tinged with conspiracy theory, that the scientific or historical facts are being foisted on us because it is consensus reality, consensus of those in power it is not the 'real thing'.
So all the historians that accept the holocaust are establishment historians not 'real' historians. Scientists that accept evolution or global warming are not 'real' scientists.