Vigilantism is frowned on Frank Miller directly addressed that point in "The Dark Knight" comic series. At one point Superman is remembering a past argument wi

Vigilantism is frowned on Frank Miller directly addressed that point in "The Dark Knight" comic series. At one point Superman is remembering a past argument with Batman, and (semi-quote from memory): "And then you laughed that scary laugh of yours. 'Of course we're criminals', you said. 'We have to be criminals to do what we do.'"