Well I find fault with the idea that Europeans are culturally similar and therefore unified. In the not very distant past Europe was at war, and almost always were among themselves. The US was successful as a multicultural entity until 1860 when we showed our true colors. Since then it’s been the rule of law; don’ t get uppity or else. Basically the problem is humans are violent territorial animals, regardless of how philosophical some people want to be about civility and peace.