You're 100% correct, I did not really mean to blame the kids I was simply stating that it's not just bad owners or bad dogs somtimes accidents happen. The reason I watch so closely is that I would not be able to live with the knowledge that I may have been able to keep something like that from happening. I also want to protect my dogs, they are my responsibility as well and having to put them down would be horrible.
I don't think these kinds of things are ever going to stop. People will always own dogs, good or bad (the people and the dogs) and tragic things happen far too often.