Just a Reminder that Mobs Can Form Very Quickly

From the Daily Mail:

Hundreds of teenage revellers descended on a home in an exclusive part of Los Angeles after being tipped off it was empty on social networking sites.

Terrifying footage from a neighbour's CCTV camera shows the 500-strong mob rampaging through a street in Holmby Hills 'like a swarm of bees'.

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Police wearing riot gear were called and neighbours reported seeing youths jumping from the second floor of the property and running though other the backyards of other backyards to escape.

The Los Angeles Police Department (LAPD) said many of the party-goers had come from another event in Beverley Hills that had been stopped.

They learnt of the new venue via social networking sites like Twitter and Facebook and smartphones.