Not *everything* you need to know.
Well did you watch it? Everything you need to know about the video is in the thread title. If you don't want to watch it, don't click play.
Why the fuck would anyone want to watch that? Why post it?
You need to know that the dog was making a lunge for the officer that shot it. Otherwise the title makes it seem very much like the officer just fancied being a dick and shot the dog for shits and giggles, which is probably what you were going for, to be honest.
I reserve the right to completely change my mind