c. 265, § 36
Throwing or dropping objects at sporting events; punishment
Official text prohibited actmental stateif conditionpenaltylegal term
Any person who drops, throws or otherwise releases any object, missile or other article at any sporting event with the intent to injure any person at such event shall be punished by a fine of not more than five hundred dollars or by imprisonment in the house of correction for not more than one year, or both.
Simplified explanation
Willfully throwing or dropping an object at a sporting event intending to injure someone there is punishable by a $500 fine, up to one year in a house of correction, or both.