I think all of you are agreeing with each other somewhat without trying to. Like I said before, I teach children with special needs (they have learning disabilities with some kind of attention deficit, not the severely handicapped children). Most of the students I teach have some sort of lack of impulse control. In the past, I have worked with students with emotional disabilities, and those are the ones that can really test your patience. I only touched them if they were physically in the act of threatening to hurt others or themselves, such as moving towards another student that they were going to get into an altercation with. I was trained to only touch them when absolutely necessary, and the positions I held the children provided maximum safety without hurting the children. When they began to calm down, and the crisis was over, they were released and the counseling began.
The point is, I learned from my emotionally handicapped students the art of patience and control. Perhaps, LEO's need this training as well when dealing with children. I think this girl was way out of line, and seems to be well on her way to a life of living among low-lifes. But like I said before, the officer, and any officer in the US, should learn the art of patience when dealing with schoolchildren. Otherwise, you end up being in the national spotlight for something that you won't be proud of. We can debate this until we are blue in the face, but it does point up a need to include training for LEO's when dealing with children.