The very fact that medical school admissions place so much weight on something as intangible a concept as race is a joke.
You get defensive and angry because ethnicity and race cannot be measured. This alone should speak for itself as to why race should not be considered in admission criteria.
Just like the new diversity SAT score, taking ethnicity and race into admissions is blank slate to discriminate against more qualified candidates.
I would call it reverse racism, but such a concept really doesn't exist. It is racism in and of itself, plain and simple.
Fortunately times are changing. See Texas Tech: no longer to consider race in admissions:
Texas Tech Medical School Will Stop Considering Race in Admissions Due to Trump Administration Pressure
As least with disadvantaged students you can ask for the income and tax returns for their parents.
No doubt you are on faculty somewhere and label anyone who speaks out as guilt of thought crime.
Anyway, I was threatened to be banned by a moderator for questioning our betters so I better stop posting.