In the midst of an period (not an era) of xenophobia, one has to note that multiculturalism is an asset not a problem for a Society, economy and country that knows how to appreciate it and deploy it as an advantage.
Societies, economies, countries that are as diverse as the world have the assets needed to be true "world powers" in other worlds play a key role in all aspects of world affairs.
It seems that not every country, society, economy has the fibre to appreciate nulticulturalism. Many, tolerate it at best. That makes culticulturalism a rare thus even more valuable asset and source of competitive advantage.