I'm well aware the color your skin matters a lot, but your passport also matters, especially at the border.
You're better off with white skin and a US passport than with white skin and a British passport, but you're also better off with brown skin and a US passport than brown skin and a British passport and that's still better than brown skin and a third-world passport.
And yeah, even if you're a white man with a US passport, you still might end up shot by ICE if you're in Minneapolis (doesn't mean you're less likely to be targeted).