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Over 150 cities and 5000 people around the world took part in International Pillow Fight Day this Saturday. New Yorkers hit Union Square for the 6th year in a row to release pent up angst by slamming each other slumber party-style with fluffy, feather-filled weapons. Take a look!

The Wall Street Journal overheard some "older folks," passing by exclaiming, "This is a nightmare for people with allergies," and, "What I worry about is the corner of the pillow. It can hit you in the eye." Luckily, no one was seriously injured.