From an excellent critique of the 'culturalism' of left and right that has overtaken European political debate, by Danish writers Jens-Martin Eriksen and Frederik Stjernfelt. Do read the whole thing - it's in the online journal eurozine, which I hadn't come across before.
Eriksen and Stjernfelt have recently published a book whose title translates as The Politics of Segregation. Multiculturalism - Ideology and Reality. If anyone has come across an English translation, please let me know - it sounds good.