This book defines what is, and is not, racist. Readers will likely discover that much of their own thinking is racist, possibly for the first time. This is a full fleshing out of the framework the author uses in Stamped from the Beginning, which is already on your list. I’m a board certified psychologist who is the diversity representative for my specialty board, as well as being on diversity committees for other professional organizations. I have literally read many thousands of pages on diversity issues. I think this is The Definitive Book on Racism available today. All humans should read it.