I agree. Yet it's a quibble that nonetheless bothers me. The implication is that without such "heroes" as this officer, we're at the mercy of the forces of violence. In other words, the premise is that only superhuman heroes can save us when the going gets tough.
I don't buy into superhuman heroes. I have faith that anyone mentally disciplined and well-trained (and armed) could have taken down this SOB.
Why do I say that? Because I would have done the same thing, with or without the imprimatur of a badge. And I'm not a hero. I'm just a guy who's had enough.
And if they had (yes, if YOU had), then he or she or you would be a hero.