Politically speaking, it was undeniable then as it is now.
BTW, nice cut and paste.
But can you defend this one?
Writing of "group fantasies of martyrdom," Buchanan challenged the historical record that thousands of Jews were gassed to death by diesel exhaust at Treblinka: "Diesel engines do not emit enough carbon monoxide to kill anybody."
I can get Pat's whole article for you if you need it.