The first African-American graduate of a university-based dental school in the U.S. was from the very first class of the very first such school--Harvard in 1867.
My own Academy of Stomatology, founded in 1894, voted to allow "people of color" to become members--in the 1920s.
Most photos of dental school classes going back to the beginning show women students. Male and female dentists have no inherent unfair pay differential, since our income derives directly from the treatment we perform.
Christian dentists, Hindu dentists, Jewish dentists, Muslim dentists and dentists of all the other great religions become fast friends in dental school, practice together, refer to each other, research and write papers as colleagues, and interact in a thousand ways with regard only to ability, not to arbitrary ethnic or religious or cultural background.
Most important of all, we dentists treat patients of all backgrounds equally, concerned with the diagnosis and treatment, not with the kind of person who carries it, and generally always have done so, going right back to our origins as an organized profession.
Maybe the broken world we live in should take a few cues in how to behave from its dentists.