Hi, Mr Troll. This kid shot a college security guard to death, so the armor came out so he wouldn't kill 20 more.
I didn't see you volunteering to chase him down in your tshirt and shorts. Considering that you do your police work from tour computer , I would predict that he could outrun you anyway.
Well, presumably the response differs depending on the expected frequency of such incidents. Given that this sort of incident is thankfully rare, I don't think it's an inappropriate response. If copycats are inspired by it, tactics will have to change.
But just look at these pictures, http://imgur.com/a/Asgdb#0
Two untrained losers were able make a major American city look like a warzone.
I hope there aren't other potential bombers out there thinking "that's all it takes..."