Just like in the US, everyone in north korea is guilty of a crime already. if the police officer decides to enforce the law on some citizen randomly, it is not

Just like in the US, everyone in north korea is guilty of a crime already. if the police officer decides to enforce the law on some citizen randomly, it is not because of the new irrelevant crime, the citizen was already guilty of something else that could have been used to punish him. http://en.wikipedia.org/wiki/Selective_enforcement http://en.wikipedia.org/wiki/Selective_enforcement