Conformity in action due to natural or man-made laws. When justice is applied to criminals, it should be remedial--an attempt at rehabilitation, and not an act of revenge.
When an individual passes over, he will pay the penalty for sinning with knowledge for any wrong doing known to be wrong. If the act(s) were not known to be wrong, there will be no punishment. Justice prevails when we fail to accept the responsibility of acquired knowledge.
For example, when we reach that stage in our evolution when one knows it is not right to eat the lesser creation of the Collective Spirit, then we inflict on ourselves a punishment for doing that which we know to be wrong. For those that have not yet reached that stage of evolution, then the soul is not yet aware that it is wrong and there will be no punishment.