It is true that with resource scarcity comes ethnic tension. But post ww2 prosperity allowed multi-culturalism because of resource abundance. But even historica

It is true that with resource scarcity comes ethnic tension. But post ww2 prosperity allowed multi-culturalism because of resource abundance. But even historically, the ruling class tends to hoard wealth and resources and have the rules fight each other ir blame foreigners. Democracy is supposed to have helped with that by giving the ruled more power and technology by enabling abundant access to information is supposed to have provided a buffer against the ruling class's propaganda. Either way, Race is a modern invention. I mean,(some) brits are xenophobic against turks and poles which are both "white" in a racial context for example. Europe like Africa and Asia has always been multi-ethnic. But nations in Europe are formed around ethnic lines after centuries of wars. Africa for example had that ethnic state thing until colonialism and post-colonial divisions that disregarded these divisions and resulted in wars and strife that continues to this day. Just like europeans should be welcome in Africa, and elsewhere, the reverse should hold true as well. But while multi-culturalism may or may not work for the US, in Europe and any other old-world nations with long standing culture and history, immigrants should assimilate and adopt the nation's culture and ways. It is unreasonable and impractical to expect immigrants to bring their culture and ways like in the US and have laws and customs to support people from all nations when 95%+ of the people have centuries of ancestral heritage in that country. But quite often, it is far-right extremists that take this sentiment and slap white-supremacist and anti-democratic crap on it to further their ulterior motives.