I think you meant, racial or ethnic discrimination. Apologies, but nitpicking to make your position stronger.
Or in the context of say, admissions, i would expect to see discrimination on academic merit in the field of study for a program you’re applying to. If you were an outstanding undergraduate who majored in like, the archaeology of medieval germany, you should expect to have a very hard time getting into a graduate program in high energy physics.
(tangentially i happen to know a MD/PhD whose undergrad was performance ballet, but she double-majored as a physical chemistry major and did piles of lab work too, and thus didn’t have any troubles)
Undoubtedly they discriminate on the basis of grades and test scores, but also on the basis of things like extracurriculars. Whether or not race should be a part of this equation is the heart of this debate.
I think legacy status is a bit ridiculous, but legacy status admissions benefit those with higher socio-economic standings, not those of a certain race. The issue here is one of discrimination based solely on race. Legacy admissions are a weird from of classism (and therefor some degree of racism, I suppose), but not of race-based discrimination.
I think the difference is quite important.
It’s true that not every white applicant has a legacy status to benefit from. But if you look at the racial breakdown of students who benefit from legacy preferences, I think you’ll find far more white students than the in the overall student body.
And nowadays, legacy preferences -- I'm all for getting rid of them -- hurts the average white student more than the average black student, because they fill up the white quota.