eugenics

When Tanton blended ecology with eugenics and immigration, he was digging up the two-century-old principles of Thomas Malthus, who first theorized that human population growth would lead to poverty and suffering.

That "Low IQ" claim is a favorite, unsubtle dog whistle Trump often applies to Black people, following his lifelong obsession with the racist pseudoscience of eugenics.

He's also been using one of his most tired insults for Black people and women: "low IQ," which is rooted in his lifelong obsession with the racist pseudo-science of eugenics.

It fits nicely with the history of eugenics and race science, which inform more modern works like “The Bell Curve.”

In a throwback to early 20th-century eugenics and "race science," Trump has expressed pride in his "good German genes" and racial background.