This kid is the famous teen pop star Justin Bieber. Yes, I didn't have a clue either, but apparently he sings in Microsoft store openings and malls. His other ability: If he doesn't tweet, he gets people in jail.
That's what happened after his presence caused 3000 hysteric teen girls to march into the Roosevelt Field mall, pushing everyone and each other aggressively. The police asked him to use Twitter to help disperse the multitude, which was getting increasingly violent. When he didn't comply, they arrested Bieber's label VP, James A. Roppo:
We asked for his help in getting the crowd to go away by sending out a Twitter message. By not cooperating with us we feel he put lives in danger and the public at risk.
He is now waiting to be charged, probably with "criminal nuisance, endangering the welfare of a minor and obstructing government administration". After that, the kid used Twitter to ask all the teen girls to go home because the performance got cancelled. Except for the two cute blondes with ultra-short skirts by the lolly shop, and the redhead with the big cleavage ordering pizza at the food court.
It seems to me a bit extreme and stupid, much like that kid who got cleared of criminal charges because of his status update. Why wouldn't the police disperse the crowd by announcing the same thing using a megaphone? Or knocking them all with long-range tasers? I can go for that or for smoke grenades. Probably both.