Fact: IQ results differ by race, even though 'races' are a badly-defined concept. Fact: Socioeconomic factors are a lot of this. Postulation: There might maybe be a genetic factor somewhere. Assertion: This doesn't justify treating people differently by race.
What is unclear? What do you object to? You seem to find the idea that there might be any, miniscule genetic factor to intelligence that is more or less common in a specific 'race' as equal to white supremacy. Am I misreading you?
(And note I didn't say anything about which way genetic factors might go. If they exist they might be opposite the socioeconomic factors, who knows.)