Given human history, why would you ever imagine that "justice" via authoritarian "political" action is going to be more moral or effective? Imagining that some people have an EXEMPTION from morality--which the belief in "government" necessarily includes--is a sure-fire way to make sure that justice does NOT happen. At least when normal people decide for themselves when to use physical force, they might do it in a moral, just way. Every "government" is an aggressor that uses immoral violent aggression.