Shooting a civilian is murder, whether or not the action is correct.
Shooting a civilian is not murder if it is self-defense or defense of others, which I think is a very good approximation to the set of circumstances where shooting a civilian is the correct choice.
Shooting a civilian is not murder if it is self-defense or defense of others, which I think is a very good approximation to the set of circumstances where shooting a civilian is the correct choice.