Improv Everywhere is a New York-based comedy troupe known for its unexpected flash mobs. For its latest mission, the group ...

When brazen groups of thieves in all-black clothes and hoodies sprinted into the Nordstrom at the Topanga Mall, the Yves Saint Laurent store at the Americana on Brand in Glendale and a pop-up Gucci ...

You’ve probably already heard of flash mobs–their eccentric gatherings have been well documented in media vehicles from the New York Times to Good Morning America ...

Philadelphia Police Department 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 ...

*Refers to the latest 2 years of stltoday.com stories. Cancel anytime. PHILADELPHIA — The mayor of Philadelphia is combating marauding groups of teenagers and pre-teens known as "flash mobs" by ...