I think it's clear that these historical events, rules, and laws still impact policy today. I think we only need to look to the criminal justice system to see this. However, I also worked in a community with a high number of people of color. Not only did the environmental racism video resonate with me (we were by a pet food factory and a highway), but the members of the community also had a lack of access to food and medical care. Little if anything was done to remedy this.
I also want to learn more about the use of intelligence and knowledge testing in immigration policies and other historical events. I work as a school psychologist and we continue to see a HUGE push for IQ testing among our students, even with research showing that these tests are not predictive or valid, especially among students of color.