Imperdonable

Little Bill Daggett: Well, sir, you are a cowardly son of a bitch! You just shot an unarmed man!
Will Munny: Well, he should have armed himself if he’s going to decorate his saloon with my friend.
Little Bill Daggett: You’d be William Munny out of Missouri. Killer of women and children.
Will Munny: That’s right. I’ve killed women and children. I’ve killed just about everything that walks or crawled at one time or another. And I’m here to kill you, Little Bill, for what you did to Ned.

http://www.imdb.com/title/tt0105695/quotes