Do people still not realize that "multiculturalism" is a political football used from the 1950's on to convince native Europeans that 'you don't need to worry about all those foreigners we're importing, we don't have to include them in our society, they'll just be here to work and make us rich and then they'll return whence they came'?

It's much more a union of nativism and free market lobbying than any sort of leftist cosmopolitan impulse.