When you read stuff like this, it really does make you realise the folly of structuralist thinking, or more accurately, the curse of the ‘ism’. I remember reading something by Marcus Doel once when the opening line was “I hate everyone” (I forget in which one of the myriad of his marvellous essays it was in and Google is no help). Of course, by that he was not expressing his hatred for the entirety of the population on Planet Earth, but rather everyone. The idea of a singular notion to describe complexity is a disturbing notion. So, when you read Mr. Cameron denouncing ‘State Multiculturalism’, you have to think what was going through the script writers mind. By extolling multiculturalism as a singular concept to be treated like a commodity is a forehead-slappingly simplistic rhetoric of linearity. There is much reticence in reducing multiplicities to a single form anyway, but to do with something as complex as the cultural rhizome of the UK by shoving an ‘ism’ on the end seems reckless. Culture is not a noun it is a verb. It is a constant juxtapositioning of ideas, things, people, beliefs, practices, communities and so on. It is performed on a daily basis by the constant to-ing and fro-ing of people’s interactions with each other and their surroundings.
Using such language then is a mistake and when it becomes to inform policy it becomes dangerous. Labelling and pigeon-holing is an exercise which is often frowned upon, given that it can reduce richness and diversity to a single descriptor. So by using language which is insensitive to the nuance of UK culture risks reactions that are not helpful, in that they are reactions against an incorrect use of language more than anything else.
In attempting to attack extremism, Cameron has, by using poor language, attacked particular people. Mutliculturalism is not something to attack precisely because it is not a thing at all.