The problem with evil is, that because it actually comes from an emotion, hate; either out of revenge, or out of jealousy; the mind as it does with all emotions (think how boys think girl have cuties and then fall in love with them after puberty) it rationalizes itself, that the OTHER is evil; and hence deserves it! – so we must know, beyond a shadow of a doubt; never in the history of humanity has any individual (a court is the exception) been granted the right to decide if another person deserves to be punished!