The Moral ambiguity of the character of Chigurh. To passive spectators, Chigurh is simply a nihilistic serial killer who kills everyone and everything is his path - prop of the oxygen tank. However, to a more active spectator, Chigurh obviously has a strong moral code which is represented through the prop of the coin. This is seen in multiple scenes, but when Carla-jean refuses to play his game at the end, she gets killed. Chigurh leaves everything down to chance, and is a victim of this himself in the car crash at the end