This is an interesting news story to watch. Notice that in one short part of the clip – after the police arrive – the good Samaritan goes down on his stomach and then is no longer in the picture.
What this told me was that he understood the role of the police when they arrive: they get everyone under control and then sort out the situation.
Personally, I still would have called my lawyer and ensured that I had legal protection, but it appears that this individual will not be charged with any crime. Good news for those who like to see law-abiding citizens making our streets safer with the proper use of force.