Common police strategy for preventing flash mobs has been tightening of curfews. Aug. 27, 2011— -- When a massive flash mob rampaged outside the Wisconsin State Fair injuring 11 fairgoers on Aug.

One very popular example of a flash mob is the March 2009 video that featured over 200 participants in Antwerp, Belgium, Central train station who spontaneously broke into choreographed dance steps to ...

The dramatic video footage often appears on TV news and social media: A large group of people storm into a store, smashing display cases and snatching loose merchandise before escaping in minutes ...