Surveillance video shows a masked man in a doll mask chasing and assaulting people near Philadelphia City Hall before fleeing into a train station.
https://www.foxnews.com/us/masked-menace-films-himself-chasing-residents-terrified-victims-scream-help-police
https://www.foxnews.com/us/masked-menace-films-himself-chasing-residents-terrified-victims-scream-help-police