Low admission standards. And low performance standards.
This is why you should never use a black doctor. But everyone already knows this.
The black “doctor” at the center of a famous affirmative action case (Bakke?) was later found to have all kinds of malpractice issues; he was given the seat of a better-qualified white student.
I once met with people from a big bank that wanted to do business with my company; there were two older white men flanking a younger black man who would be working with our accounts. As I described our needs and current configuration, any questions I asked the black man (our future rep) were answered by the white guys/”mentors”.
We didn’t follow up with them; I’m not going to have some inexperienced/unqualified token managing our banking affairs.