It is an article of faith among the Left that there is no statistically significant difference in intelligence or other mental quality between the races, and that intelligence has NO relation to genetics.
To argue otherwise is, BY DEFINITION, racist. And therefore false.
You got it.
The weirdest part about their obsession in this regard is its implications.
We must not recognize that people with very dark skin have, on average, lower intelligence, because then we as a society will treat all people with dark skin as second class citizens. The only solution to this is to deny the remarkably obvious fact that, on average, they do.
The implication is that people of lower intelligence SHOULD be treated as second-class citizens, regardless of skin color.
I would personally prefer to develop an ideology by which a person’s intelligence has nothing at all to do with his human rights. Intelligence is wonderful, but vastly over-rated. As anyone who has ever attended a Mensa meeting can attest, the upper 2% of IQ includes a remarkably high percentage of dweebs, losers and whiners.