It makes more sense when you realize the two bins are also labeled “not white” and “white.”
(Which also explains the shock white people experience when circumstances result in them being sorted into the “not white” bin — suddenly they’re experiencing treatment from law enforcement they otherwise would never see.)
It is more subtle than that. In most cases a female PoC in business attire is more likely to be sorted into the "not criminal" bin than a white man with a typical "white trash" look.
The racism comes in when you compare reactions to casually dressed white vs casually dressed PoC. And it gets dialed up even higher if the PoC is showing any ethnic styles.
If you use a model of "Random officer X encounters random citizen Y" if citizen Y is a PoC, they are more likely to be prejudged into the "criminal" bin, but this is not the only factor (gender, inferred socioeconomic class, &c. will also play a role).
This is very different than labeling the bins "not white" and "white"
(Which also explains the shock white people experience when circumstances result in them being sorted into the “not white” bin — suddenly they’re experiencing treatment from law enforcement they otherwise would never see.)