What is it with cops in the states having a hard-on for pushing people around? Provoking people but then not having the sack to handle anything without weapons. American mentality I guess.... we like to fight fire with fire. If one of these cops had just remained calm and said to the kid "listen, you dont want to go to jail tonight, let's go outside, I will try to explain the situation to you, and we can all calm down" then there probably would be no issue right now....
I watched a couple people having issues with the cops in Europe, from London, to Germany and Finland, the cops remain really calm, and just keep telling dudes like this to relax. They calmly explain the situation and usually the offender calms down and goes home. The one that really impressed me was in London, it was this one guy who was drunk as hell and had just been in a bar fight. He was yelling at the cops inches from their faces and they just kept telling him he needed to go home, and reminding him that he probably didn't want to go to jail that night. After a min. or two he finally got the idea, and started to walk home.
Force does nothing but escalate things, it makes people feel more wronged and they try to revenge the injustice they feel, of course each reaction is more swift and harsh until someone lands in jail or gets shot usually....