>that they're looking for identically qualified people that aren't black?
You see this here on HN all the time, articles about "how we do hiring" that start out with "I would only hire someone who I'd want to get coffee with." Which, to me at least, makes it sound like the person is looking to hire friends/drinking buddies that also have technical skills, not employees. It's a signal that the person is looking for "their type of people."
It's so acceptable to hire this way that people feel comfortable opening publishing that, under their own name, as something they are proud of.
I'm not even black (but I am a woman, I grew up poor, and I'm on the older side) and constantly reading about hiring procedures like that makes me feel like I'm very much not welcome.