There is no room for revenge, or nationalism, or aggression, or racism, or thievery in libertarianism. You can still be a libertarian and harbor those things deep inside, of course, but those things are not libertarian. And if you don't get rid of them, they may come out at the worst possible moment of weakness and cause you to act in ways that violate your foundational stated principles.
If that happens and you are not bothered by it, or don't recognize the inconsistency in it, you may not really be libertarian.
