Not justifying the pharmacists actions, but these thugs tend to get revenge when you maim one of them. Under duress, you may not have any idea what you may do. Really a case where the security cam back fired on it’s intent.
That may be true, but it’s likely that instead of executing him. Jerome could have called the police, and the suspects would have been rounded up and put in prison for a long time. The assailant may have died from his wounds anyways, still causing the masterminds to be sentenced to life in prison. I suspect the verdict would have been innocent if Jerome had not executed the man on the floor and he died from the wounds inflicted by Jerome defending himself.