Comparing ethnically homogenous countries to the US is meaningless and downright deliberately misleading at best. There is significant variation in every state by race. https://en.wikipedia.org/wiki/List_of_U.S._states_and_territ...
can't this variance be explained more accurately by relative income? the US is more ethically diverse than many western nations, but also has high income inequality. This inequality, unfortunately, is distributed ethically
Trenchant, if unintentional, observation :)