Has Multiculturalism failed ? Hindus , Buddhists , Sikhs, Christians , Jews , Atheists Chines , Japanese , Russians all are living harmoniously with what ever foreign culture or land they are in. Except Muslims.
So multi Multiculturalism has not failed. Islam has. Dont try to interpret a problem from a wrong point of view.
And here is the comment that best summarise the situation I have come across: