> I assume the intent is to help disadvantaged people have opportunities that more priviledged people have already. Right?
It has been transformed into that through the twin attacks of "diversity" and "class, not race," but what it was meant to do was aid the problem that the US ran into after it released millions of slaves into the street with nothing, and they didn't manage to magically create something from nothing.
It transformed from that into an efficiency argument to stay "constitutional" in a country that largely doesn't feel any guilt over slavery. Instead of staying an excuse not to pay reparations to their discarded farm equipment, the justification was A) that everybody should get a fair shake, and some people couldn't because of who their parents were ("class, not race", "equality of opportunity"), and B) that "diversity" of background gave an creative and decisionmaking advantage to businesses.
The problem with these stupid justifications for affirmative action is that they don't support it at all. A) actually argues against race-based affirmative action, and B) paints it as a problem that should be naturally solved by the market with no intervention.
The problem that the US has is that it had brutal discrimination by laws at times so harsh that in 18th century Maryland (iirc) there was a law that would sentence a white person to death for teaching a black person how to read. The problem is that black people collectively have barely more per capita wealth than they had when they were freed (which was $0.)
That being said, black people have increased their proportion of national wealth since freedom, and white people's proportion of national wealth has been reduced, so that's sure libertarian evidence that black people are intrinsically superior to white people, though who can say if that's due to genetics or culture. If reparations were paid that brought the black share of national wealth to parity with the black proportion of the population, racism against black people would cease to be an issue that the government should be concerned with.