Pillow Fight!
San Francisco authorities appear to have had ENOUGH after a “flash mob” of up to 3000 people appeared on February 14 armed with pillows and had great fun for six hours having at one another. Participants didn’t clean up, leaving the city with a $20,000 bill for feather detail. (Flash mobs are groups of people who contact one another via electronic means and suddenly show up for an event.) The authorities say they may now start requiring permits for such things, although they acknowledge that giving advance notice is a problem. Read more here and here.