LAPD scrambles to stay ahead of flash mobs
Social networks can be used to plan violence and other criminal activities
The Daily News of Los Angeles
LOS ANGELES — Had the tips never come in about new "threats" during Carmageddon, police may never have known until it was too late.
Out in full view of the public, but buried somewhere in the mountains of chatter on Twitter, a flash mob was planning to form on the shuttered Mulholland Bridge, half of which was being torn down to make room for a car-pool lane on the 405 Freeway.
Full story: LAPD scrambles to stay ahead of flash mobs