People think of the US as a very racist country, and it definitely is in many ways. But it's one of the few countries that "walks the walk" and doesn't just "talk the talk". America is one of the most racially diverse big countries.
I think America is less racist than, for example, maybe Japan. But since Japan is already effectively a demographic ethnostate, you don't hear about racism being a problem as often.
The average random person in America is not racist, and has also spent their whole life interacting with people of different races.

Depends on your particular device. Mine will go 90° but not 180°.