Okayyyy...
I have survived bringing up two children all the way now to 19 and 21 years old. I have got to tell you, you have to always remain alert and adult and assess things properly. My first response would have been, and on occasion was, to make sure my child was alright, and find out rationally what happened. If either is injured, the first response is care, not revenge.
We as parents have a particular obligation to remain rational. What are you teaching your children (however old they may happen to be) if your response to an incident, however grave, is animal fury.
So that's my take on it, he still needs to reassess his life.
John