When I first watched this video, I was appalled by the inaction of the police officer in the background as the ranting drunk man approached the woman who is recording. If this were in Illinois, the man would be guilty of assault--open and shut case. But regardless of the state, the inaction of the police officer is inexcusable.
Then I learned that this happened in the Chicago area. The cops in the background are Cook County Forest Preserve police. The drunk man has been arrested and charged with assault and disorderly conduct, and the police officer has since been assigned to desk duty.