I was amazed to read about W.E.B DuBois and his scientific work documenting the effect of systemic racism back in the 1900s in Philadelphia and that it leads to disparate health outcomes. There was a show on PBS that referenced it with respect to covid disparities among minorities showing that Dr. DuBois was way ahead of his time. In fact, we, as a society, still haven't learned anything more than 100 years later!