pillow fight at Toronto city hall

Tonight as I walked by the city hall, I was surprise by a large group of mainly young people having a pillow fight on the Nathan Phillips Square in front of the city hall.
Some of the fights even took place in the pool, eventually the city hall securities had to order them out of the water. As I was leaving they were still going at it each other. Turned out this event was organized by an internet site, “newmindspace”. Apparently, there even a world pillow fight day too!