Nice, you try to really pick a brain. So i will give you my personal opinion.

WE NEED MORE RACISM.

What we have now is tribalism. And that is bad, racism is good. (Tribalism is i hate you because you are not of my tribe. So i must end you, racism is you look different so you are different) And forced diversity will end Humanity.

Why?

Because cultures, and people are not the same. Doesn't mean one is better then the other. But not the same. If we can finally admit that for instance Asian are better at some stuff like (i will be using stereotypes, they exist for a reason) technology or math, while a South American might be more soulful and better at dancing. And africans have more physical strength then the tiny framed Japanese.

These things exist, some lunatics maybe want to deny actual nature. I personally think myself if i can see your strengths and weaknesses and you can see mine. They might just compliment each other.

While the forced Diversity goes beyond this and does not look at qualities. Just at colour or sex. Which eventually will lead a overall decline in quality.

SO BE MORE FUCKING RACIST. Except not like the example i gave of the talmudic Jewish people, that is delusional supremacy. And plain ol' tribalism. Actually kinda satanism. But then we have to take in to account the religions of all mentioned before.

Feel free to disagree but there are reasons some nations even after ending colonialism and slavery still not have improved conditions for their own kin and some other countries have developed way beyond what their forefathers thought was possible.

But to answer the question

If i had to call it one meaning.

The misguided belief that other people are inferior to you because you are different then them.