There was actually a big twitter thread by a black recruiter at Google (now cut) who out and out said that Google's interviewing engineers looked down on black seniors and ranked them universally lower than white seniors, particularly black seniors from historically black universities. She had to fight tooth and nail to accomplish getting the first black entry-level-from-college hire in all of Google's history.
And it was specifically about hiring from HBU's vs other elite institutions, not about hiring black applicants in general which is how you described it.
