Have you heard about the "Knockout Game"? Ostensibly, roving packs of teenagers walk up to random people and attempt to knock them out with one punch. Police, however, question whether the Knockout Game actually exists or is simply an internet-fueled urban myth. Of course, whether the game exists or not, one can reasonably worry that the increasing coverage in outlets as varied as The New York Times and "The Solipsist" will inspire people to create it (you're welcome, America!).
More disturbing, though, are the official reassurances: Sure, police say, people have been punched in the head by complete strangers for no reason. But far from being an organized activity engaged in by disaffected youth, these are merely the random acts of violence we've all become accustomed to in America today. Nothing more to see here!