Well, perhaps 123everton, we shouldn't say how many Moslems live in Nanterre, featured in the news as a place, together with Marseille, where there was serious rioting ! Marseile has a large Moslem community too. Could well be that a lot of the rioters in both places were, in fact, Moslem !
Nanterre is a suburb of Paris. It has just under 25% of residents born outside Metropolitan France [i.e. the 'mainland]. Some 20% are from outside the ' EU 15' and a large number of those are from Moslem countries, generally former French possessions. Many more are children of Algerians, who are then not counted as outsiders by the French government . Marseille is the nearest big French port to North Africa and has long had a substantial Moslem population in consequence. There's a lot of disaffection in suburbs like Nanterre.
But, of course, any Moslems were not protesting as Moslems, on a 'Moslem' matter, but more generally. .