Racism as something based on skin color only would make Nazi basically not racists in their worst acts. Cause their racism was literally Aryan race against all other races - Slavic, Jews (European Jews where white, the physical features were like somewhat bigger nose), British, French. With Jews on the bottom, as the wort enemy worst then blacks. And they would not care a bit about different kind of Indians either.

If anything, attempts to redefine racism as only American variant where it is all about shades of color is redefinition.

And obviously, ethnicity and geography goes with races.