What sins we may justify
It seems like this season of "Justified" is an extended meditation about the terrible things people can justify to themselves. Even Raylan is talking himself into feeling entitled to break an awful lot of rules, and his fellow marshals are getting nervous about the amount of slack they need to cut him. The last episode ended with Ava making her peace with full-blown, heartless evil... and, in contrast, a killer who previously showed himself capable of murder without a second thought suddenly found it hard to pull the trigger.
It's an interesting theme to explore. The show also offers characters who are crooked without apology, and harbor no illusions about themselves... but for everybody else, it's one step at a time toward corruption, with all manner of justifications and excuses for every step they take.