"Roving Gangs of Teens" or, "Paris is Burning"

There were 900 cars burnt in the 'burbs of Paris last night, due to "Roving Gangs of Teens" - no lie. That's the phrase they're using on CNN, CTV, CBS.. it cracks me up. I mean, it would be funny enough if it was here, in North America. But with our stereotypical ideas of the French.. (ok, maybe they're just mine..) I picture box stepping west side story gangs lighting their cigarrettes off of burning cars and making sure their identity concealing bandanas match their shoes. Oh dear.