I would have simply ignored the TSO "yelling at me" and would have kept on filming. Let the TSO come and try and take my camera. I would not do one thing until the TSO put his hand on either me (assault and battery) or my camera (robbery or at the very least, attempted robbery) and then before the TSO could think twice, he would be face down on the floor with his arm twisted hard behind him and my knee in his back with me yelling as loud as I could, "I need a police officer, I need a police officer" When the police officer arrives, I simply say that I was assaulted and this person (the TSO) tried to rob me and if you don't believe me, play the surveillance tape.