ABC online has an article by Chris Uhlmann about 'Multiculturalism' and it's apparent failure in Eurape and elsewhere, which I couldn't bother reading, but found effort enough to respond with this....!
Failed Multiculturalism, like racism, exists purely because an elite (and very fanatical religious) clique own most of the land, and they will NEVER let it go, justly or by sale, to people from other skin-groups or cultures whom they deem as lesser than themselves.
Multiculturalism has been a brave attempt to modernize our religions, but will become a weight around everyone's necks, without genuinely re-appraising how we distribute the land we all need to be healthy of body and mind. Where we are all allowed to practice our own native culture without bigoted under-employed victims of bad land laws raging against our appearance, preferred clothing or private religious practices.
Multiculturalism fails because our anachronistic elites are stuck in the whiteface 19th century policies of deeeep ignorance, similar to that which still runs the Vatican.