I mean, classism is about as real as racism but I don't know why one would ask about classism vs race. Class is about as not real as race; they're both things that people made up to justify their disrespectful behavior towards others.
race as an idea is a societywide royalty of blood, which is why its so widespread in failed democracies with despots."We are all zhar/oligarch/king" and those not from here are the serfs.its the very same idea just bastardized.
Bad turn of phrase, I guess.