Alternative Character Interpretation: Originally, the stranger was the marshal's brother and may still be, the script was changed to leave it up to the viewers. The most common are the ghost of the Marshal, Death or even Satan himself.
Acceptable Targets: The cowardly of course. The townsfolk are repeatedly shown to be either unwillingly to confront or even care about the evils within their own town.
What An Idiot: The townspeople have their ambush set up and ready, the gunmen ride into town, and what do they do? Cower down and refuse to shoot.