Most of us, for fairly obvious reasons, decry the use of violence by individuals, yet we are all complicit in the use of violence by the state. Our democratic governments imprison and kill in our names both in war and for the enforcement of our laws. Sometimes (often?) wrongfully.
Why is our collective violence de rigueur but individual violence is immediately presumed to be evil and wrong?
Presumably use of violence by the state is intended to be "justified"; i.e. it is not random, emotional, or for gain (except, perhaps a societal gain of increased safety), but either for the cause of "justice", or for safety--and these calculated, functional properties with an aim of public good make the action acceptable.
The obvious difficulty of individual violence is the tendency for it to be emotional or for personal gain, or for a lack of rigor in establishment of guilt in the presumed crime of the victim. But if guilt has been firmly established, if the target of violence has, beyond a shadow of a doubt, committed heinous acts, then what is the fundamental difference? Isn't the elimination of a destructive force by an individual precisely the same in outcome as the elimination of the same force by a collection of individuals?
And in a thoroughly corrupt system which promotes, protects, and encourages these destructive forces--or a system which feigns to protect and represent its citizens (but doesn't actually do so)--mustn't the responsibilities of protecting and shepherding at some point eventually fall to the citizens themselves? Surely evil carrying your banner is still evil?
Now don't get me wrong, I'm no proponent of violence. I think (even) our government should commit considerably less violence. I think we generally need to scorn violence by the individual because of the likelihood that it be unrigorous, emotional, or selfish. But I don't know that the difference in emotional weight between "kill" and "murder"--that is to say "unlawfully kill"--should be so great. It seems to me that the philosophical basis for the two should be the same, rather than scorning one and supporting the other because it carries a badge.