Have you ever wondered why American school kids sing the Star Spangled Banner each morning and raise the Stars and Stripes?
They do this and many other things to bind their country together, to create a common purpose, a more perfect union, a common identity as American citizens, not just a collection of various ethnic groups with little in common. These things do not subvert difference, they create a commonality between citizens, shaped around shared values. Because if citizens of a country don't have at least some shared values, everything falls apart.
Multiculturalism flies in the face of that, it states simply that there is no prevailing culture in this country and in so doing there is no commonality, nothing that binds us together, no common purpose. Of course you, me, Ngozi Fulani can call ourselves what we want, wear what we want, identify with what we want, but without shared values eventually we have nothing in common whatsoever, to quote Theresa May, we become citizens of nowhere.
