Stay classy Cubs fans....here's the description from YouTube:
Guy takes off Mascot’s head, Mascot punches him in the face. This guy was out with a bachelor party. He tried to trip the mascot three times and then threw himself into the mascot in an attempt to start a fight. The mascot ignored all of this until he got his head pulled off. After the guy was punched in the face and his friend was thrown to the ground, the guy knocked the mascots tip jar out of his hands. I just happened to be there with my camera.