There's nothing like APK in this game, nobody has right to judge others if they are bad or good and if they deserve death or not. Well, maybe except me... So if someone says "I'm killing bad people/PKs" or "I killed you because I thought you were PK" he is lying. All these are just poor, childish excuses to kill someone. Everyone follows his own way of understanding justice, but something like APK doesn't exist, deal with it already people.