The infamous policy book, The Bell Curve, relied on the false claim that people of African ancestry are of low IQ (and some other things). That was based directly on the work of J. Philippe Rushton and it is false.
The Bell Curve became, in the 1980s, the intellectualized version of pseud-scientifically based racism. The Bradley Foundation, which paid for the book’s publication and printing, made sure there was a copy of it on every politically relevant person’s shelf, from elected officials to potential candidates to staffers to faculty involved even marginally in politics or society.
When those of us who study pseudo-scientific racism and works such as the Bell Curve hear the phrase “Low IQ person” we know exactly what it means. It means a white supremacist is referring to a black person.
Here is Eugene Scott commenting on this phenomenon: