it isn't murder if you are killing to save life, it is murder if your killing to take life, the killing sown was not murder becase the guy killed was aiming an RPG at someone, had the man not been killed then one or more other people would hae died as consequence of the innaction.
"think I'm taking someone's side here" I do beleive you were the first person to use the word murder to describe the video, as you may be aware the word murder has a certan negitive conotation with it, calling the act murder immpys that the people fireing were murderers, and calling someone a murderer is generaly takeing a side.