If all you’ve got to criticize the guy with is some 15-year-old newsletter taken out of context, you don’t have much.
Racism is simply an ugly form of collectivism, the mindset that views humans only as members of groups and never as individuals. Racists believe that all individuals who share superficial physical characteristics are alike; as collectivists, racists think only in terms of groups. By encouraging Americans to adopt a group mentality, the advocates of so-called "diversity" actually perpetuate racism. Their intense focus on race is inherently racist, because it views individuals only as members of racial groups.