but it can be warped by the societies that practice it. Just because you don't see justice being carried out in the world, doesn't eliminate the possibility of its existence.

But to me, justice is a very concrete ideal - one that focuses on exacting an equal punishment for an equal crime. Even though this is extremely subjective, I believe that if one can reasonably equate a crime with a punishment through correct logic, then a fair punishment can be exacted. For every action there is an equal and opposite reaction.