They're getting around to a curfew, after all it's only day 12. /sarc
Seriously, I wonder if they aren't more concerned they won't be able to enforce a curfew should they try to establish one. Especially at this 11th hour.
When does night time begin in France? How long from now?
Well, a curfew would still be a good idea. It would give parents another tool in controlling their kids. It might keep the snots off the streets and out of the line of fire, leaving more time and manpower to deal with the more dangerous types, the ones who don't get off on just tossing a couple of rocks.