Places less culturally diverse are far more racist than culturally diverse places like America, but less explicitly so because there isn't as much a chance of an incident.
Yeah, people are totally more explicitly racist in the U.S. than in Ukraine or Serbia...
That's in part because of the fact that Russia has been pushing civil war in Ukraine, the ethnic tension there, and, as for Serbia, they are still recovering from a civil war that destroyed their Balkan empire. They once again are becoming the puppet of Russia.