Either way, in the name of breaking up a fight, which is done to preserve order and prevent injury, it makes no sense at all for an officer to barge onto the scene and ultimately cause the most serious injury of them all. A slam like this could have killed the young student. The fact that she has a concussion from the officer throwing her to the ground proves it. This concussion alone could have long-term effects on the health of her brain and make her susceptible to other brain injuries.