It's a(n) heretical argument".
Heresy is dissent from revealed truth. He's saying that the non-superiority of Europeans is a matter of religion (his religion), and therefore not susceptible to proof or disproof.
He's also saying that those who collect data are heretics, and (presumably) therefore subject to the sanction of the "religious" authorities, which sanctions so far (fortunately) are limited to witholding of grant money and non-publication of papers, leading to nonpromotion and exile to real jobs.
Of course, as idiots like this import more and more of their co-religionists from Mexico and elsewhere, the sanctions for real scientists may become more severe.
Today's heretic is tomorrow's prophet.
"Of course, as idiots like this import more and more of their co-religionists from Mexico and elsewhere, the sanctions for real scientists may become more severe."
Wait.
So, paleontological DNA scientists are Catholic (since that's what they'd be to be co-religionists with the folks arriving from Mexico)?
Just askin'...