*Disclaimer - my personal experience, I am a disadvantaged minority, just not URM*
I can see why diversity is needed and how individuals that are considered URM are unconsciously looked down upon by their peers, especially in the science courses. Individuals automatically assume you're not competent to do the coursework and would rather not pair up with you if a team was involved. Stereotypes exist in all groups, some more negative than others. I also can see how the majority think URMs come from bad, poor environments, which restricts them to resources. What I don't see is why individuals use that excuse during their university years.
I do acknowledge that our university education isn't perfect (nothing is), but it creates a better, or more equal (I'd say) playing field amongst every group. I say this because there are resources (at least on my campus and pretty sure most do) that are geared toward helping and promoting minority undergraduates to pursue health-related careers. You also have access to the same resources everyone else on campus has, plus those programs specifically geared to minorities. I guess I see it mostly as an excuse if you still say you're lacking the resources at the university level. I don't think individuals look or try hard enough to look for these resources that are offered to minorities, because they do exist and I'm grateful because of them.
Also, as you can see, knowing that certain groups are more likely to get in with the same stats compared to other groups makes the whole discrimination thing even worse (even though the whole idea is to diversify, which is good), but most ORMs see this as "unfair", since acceptance should be based on merit and not having a "boost" due to your skin color. A URM that gets into a top medical school, or even any medical school will always be looked down upon and individuals will assume they were accepted due to their skin color. Discrimination will always exist as long as mankind is alive (IMO). I guess the only thing plausible thing to do is to, "Let 'em talk, let 'em hate." I realize there are a lot of things that are "unfair", but these are things I can't really change, so I try not to worry too much about it. Then there are things I can influence, which I try my best to. In the end, just do you and be successful (in whatever way you interpret success as).