I was appalled when I first learned about the syphilis study and doctors deliberately not treating African American men when a cure was found. The extent of racial abuse by medical science is horrific. As a 55 year old white person, i was not exposed to much of this country's shameful past. My history classes glorified white culture. I'm embarrassed that I only learned of some of these atrocities as an adult. I still have a lot of learning to do.