Well, no, it wasn't technically a war zone. But it isn't here, either.
I'm not sure that comparing the number of guns with the number of deaths is a valid way of demostrating anything. You may as well count all the kitchen knives available in London and then wonder why everyone inside the M25 isn't wandering around full of holes.
You only don't want them because you weren't raised with them.
You don't want a tool for killing, but sales of baseball bats on Amazon are up over 4000%. It doesn't take a gun to kill or hurt someone. It only takes the intention to do that.
And I don't know about you, but I can guess what the buyers of those bats were going to do.
Guns serve another purpose other than killing as well. They serve as a deterrent.