Here's an update on crime from Le Salon Beige, quoting the weekly Minute:
The number of acts of urban violence committed in 2007 in France was published discreetly by the Interior Ministry. It totals 93,016, including 37,359 cars burned, or 102 per day! The remainder is divided up as follows: 26,217 trash can fires, 7,955 acts of vandalism against city property (both slight damage and total destruction), 6,856 projectiles thrown (the targets were mainly policemen), 5,658 car chases and 4,101 cases of collective violence against security forces and medics.
The article points out that throwing a projectile is considered an individual act, not a collective one, though from what I've read of crimes, gang violence usually includes projectiles.