The big pillow fight happened yesterday, and there are plenty of photos up already. Check some of them out below, and more here.
One observer (who didn't know about the fight) writes, "walking back towards Union Square Park, all I see is a large group of people in the park surrounded with pillow feathers. Many of the people were bashing each other savagely with their pillows, while many groups just sat and some guys were showing off with their shirts off, while others lounged in the fair (40-something degree) weather. It looked like alot of fun. This was way better than the hundreds of Santas I saw before Christmas a couple of months ago."
Photos via macronin47's flickr, atestofwill's flickr, cooler1011's flickr.