The three players in No Country are more clearly defined: Anton Chigurh (Javier Bardem) is not your run-of-the-mill psychopath. He moves calmly through the movie in pursuit of a satchel full of drug money, but his entrenchment in his victims' lives is too personal for a business-as-usual hired killer. His tracking is almost feral, as if he can smell Moss.
Inside Moss’s mobile home Chigurh has arrived too late. He looks around him, removes a bottle of milk from the refrigerator, sits on the couch and drinks it, while observing his reflection in the silent television, as if sensing how Moss lives will tell him what his quarry is likely to do next. The violence he dispenses is uncompromising, but tempered by chance (a coin toss), and seems bound by rules that only he knows.
The value-bereft thought revealed in this question magnifies the villainy, especially in a society beset with scattershot homicide.