Looks like the US kids are trying to copy what happened over here in the UK
'Flash mob' robs Maryland 7-Eleven in less than a minute, police
(CNN) -- A "flash mob" believed to have been organized on the Internet robbed a Maryland convenience store in less than a minute, police said Tuesday, and now authorities are using the same tool to identify participants in the crime.
Surveillance video shows a couple of teens walking into a Germantown 7-Eleven store on Saturday at 1:47 a.m. Then, in a matter of seconds, dozens more young people entered and grabbed items from store shelves and coolers. Police said the teens left the store together, without paying for anything.
Violent "flash mob" attacks have also been reported recently in other cities across the country, leading to crackdowns on curfew enforcement and stepped-up police patrols.
Extra state troopers were ordered in after what was described as a "mob beating" took place at the Wisconsin State Fair.
Attacks in Cleveland, Chicago, and Washington have all led to the arrests of dozens of teens and resulted in extra police patrols in and around these cities.
http://edition.cnn.com/2011/CRIME/08...Top+Stories%29