I teach a course in Ethnic & Cultural Diversity at the local community college where I have often taught my students about historical facts such as the Japanese internment camps during WW II. I did not however know about some of the things presented. i.e. people of color being sprayed with DDT to "de-louse them", unbelievable. I also did not realize that we in the USA had a negative influence on Hitler's Germany. The videos certainly drive home just how entrenched racism in in our American history.