French police and firefighters are often ambushed in sensitive neighborhoods by groups of young people.Young people do not hesitate to use molotov cocktails, very powerful fireworks, stones, and many other dangerous objects.This scene is happening in Grigny, a city where there are very dangerous neighborhoods, drug deal, robbery, assaults, shootings.This kind of aggression against the police are daily, but mainly during the eve of July 14, and July 14 and summer.France is also known for its large number of cars burned each year.