Flash mobs have been a menace for more than a decade, and it is time that law enforcement cracked down on them. They’re no ...

Watch where you suntan this weekend. The prank group Improv Everywhere is planning a fancy beach flash mob in New York City where they’ve asked people to show up at the beach wearing black-tie attire.

It takes two to tango. But it takes a lot more than that to start a flash mob. The 10th annual LA Summer Tango Marathon will take place across the South Bay next weekend, featuring a traveling “flash ...