You can keep saying that I am equating the two all you want. Doesn't make it true. You can cut down on any crime by shooting on sight. Doesn't make it the right thing to do.
What about the 15-year old kid who is watching everyone come out of that store with stuff and so he goes in and takes a few packs of smokes? Kill him? Seriously?

Yes, it does, and you are wrong. You shop lifting in stealth is not even a difference of kind much less degree, when compared to 100s who are burning, thieving, and looting. The best way is to use drones to spill hell fire on the looters. Same with the bad guys overseas who risk their children to hell fire. Tough on the kid.