Just to add on a bit to what Juan Cole wrote to reiterate a couple of things. France's approach to multiculturalism and race is essentially that of Ward Connerly you simply make it officially not exist. A couple years back Connerly pushed for a ballot measure in California which would've made it illegal for the state government, in most cases, to make any racial classifications by race. While I'm not entirely unsymapthetic to the notion that such classification systems are problematic for various reasons, the alternative is simply having no information at all about race.
This is France's system. This is the conservative approach to race and society. This is what they've spent the last week mocking.
They're such idiots.