I don’t often agree with Baronness Warsi: our politics are too different in almost every respect; but, credit where it is due, she gave a brave speech some weeks ago denouncing how prejudice against Muslims had passed the dinner table test and become acceptable in a way other prejudices are not.

So it is disappointing that the Prime Minster’s speech to a security conference in Munich today will further legitimise such prejudices by its illogical, incoherent and contradictory attempt to define “acceptable” and “unacceptable” Muslims not according to their propensity to use violent and criminal means to achieve their political ends, but according to some calculus of cultural proximity or otherwise to some putative (and mythical) set of ‘British’ values – in other words, according to how culturally similar or different ‘they’ are from ‘us’.

As with much else, Cameron’s claim that this marks a radical departure from the previous government’s ‘fear and muddled thinking by backing a state-sponsored form of multiculturalism,’ is a rhetorical ruse which obscures the reality of continuity, for the hallmarks of the previous government’s approach were to blame multiculturalism for creating ‘segregated communities’ that did not share ‘British values’ of liberalism, tolerance and equality etc., etc. They too sought to define ‘moderate’ (good, acceptable) versus ‘extremist’ (bad, unacceptable) Muslims using ‘British values’ and other nebulous terms such as ‘way of life’ as yardsticks. If this were university assignment Cameron would be hauled up for plagiarism.