They've done studies that show infants trend towards racism from birth, which is to say those not like them are treated with suspicion and cause elevated discomfort.
The take-away that they got from that article was the idea that education should start earlier, but my take-away was actually pretty different. I think racism, as long as it doesn't negatively affect someone's life and ambitions directly, should not have this cultural stigma. We're all ignorant to some degree and there's not enough time in the universe for us to get it right.
If a black candidate for a job has equal qualifications to a white person, or better, that candidate should at least be in consideration. That's pretty much it. What exists in my mind, as the recruiter, should not be a shameful thing if I have every intention of hiring in an honorable manner.
Even if you are to say that some group deserves to be treated better because of how they were treated in the past, that idea is racist. It imparts the value that race should be a determining factor in fairness.
Black and white and brown are all guilty.