Well, there's historical precedent. According to one Muslim tradition, Muhammad himself said that whites were best ... as sex slaves. Particularly "Banu al-Asfar" which means "children of yellow" (hair -- blondes).
https://www.raymondibrahim.com/2015/07/30/why-muslim-rapists-prefer-blondes-a-history/
How did he know what whites were? I don’t think they thought of race in modern terms.
More to the point that that "already to the point," many Hadiths say that if one says Mohamed is NOT white, they should be killed. Yup.
In the hands of the Left, race is whatever they say it is. Or not. Sex is whatever they say it is. Or not. Crime is what they say it is, and look the other way when caught.