I am not a URM, so my opinion may be worthless, but anyways...
I can see how some socioeconomically disadvantaged URM students may have worked as hard or harder than "white" students, and have as great or greater desire to become a doctor, but due to their uncontrollable situation could not perform as well in school. I can also see how recruiting URMs creates more minority doctors, who can at least serve as leaders for the minorities, and hopefully help to correct the differences in health care that exist between the "whites" and the minorities.
However, I can also see how a URM who has managed to perform very well, regardless of their situation, would be upset to receive "special treatment" over other applicants, but would rather be viewed through colorblind eyes as an excellent applicant through the work they did, not the handicap they may have started with.
To the OP, I have no idea how different schools really view URMs, but I'd hope it takes into account the things I mentioned above.