He threatens to pull out a gun, the mugger (who hasn't just been given a concussion by several blows to the head) has better reactions and pulls out HIS gun first and kills him.DanielDeFig said:No. He was wrong. If someone mugs you, but punches you rather than draw a weapon on you, then you should at least start by threatening them with the weapon you are carrying. A reflexive response of "shoot first, ask questions later", proves why civilians should not be given the power to end peoples live so easily.
And to all of you that say the mugger "deserved to be shot": that's disgusting. Not even if he'd had a weapon (where lethal self-defence is excusable), would he have "deserved" to die. There is no logical explanation that can ever be given as to why a person "deserves" death.
Telling the guy to back off is one thing, but announcing you have a gun when he has the advantage is just suicidal.