AP Photo-FILE – In this March 20, 2010 photo, young people fill South Street during a flash mob incident that involved thousands and closed the street to traffic from Front Street to Broad in Philadelphia. Thanks to websites like Twitter and Facebook, more and more so-called flash mobs are materializing across the globe, leaving police […]
AP Photo-FILE – In this March 20, 2010 photo, young people fill South Street during a flash mob incident that involved thousands and closed the street to traffic from Front Street to Broad in Philadelphia. Thanks to websites like Twitter and Facebook, more and more so-called flash mobs are materializing across the globe, leaving police scrambling to keep tabs on the spontaneous assemblies.