Here's a general thought on rioting and police response, including not only Paris now but also shennanigans in Argentina and wherever else any sort of summit is held. And including also the mobs of kids that circle around downed copters in Iraq or otherwise are shown rejoicing when American troops are killed. Why don't police (and in Iraq the American military) use nonwashable paint projectiles on everyone in sight - and then arrest everyone with the color stain on them in days to come at their leisure? Otherwise police (and military) are reluctant to use any kind of force, not only bullets but even rubber bullets, stun guns, etc.
Ref post #164.
Good point.