Some people need to stop it with the "safety" concerns. Honestly. Children will never learn if they can't get hurt. (Heck, I encouraged my son to get on the monkey bars the other day despite knowing it was likely that he would fall because if he doesn't try he will never know how to do it.)
And some people need to stop trying to place blame, especially on schools or others for what are accidents. It is not negligent to allow a kid to play, especially a sport. It is life. Injuries and even death are a part of life. It is tragic when children die, but it is also part of life, and doesn't mean that we always have to look for ways to prevent every child from dying.