A crowd of concerned citizens confront Vigilante Man on his claims of Crime Fighting, and ask for proof. Like all the vigilantes, when asked for proof, or confronted By proof, they run away. The Minutemen, The New York Initiative, The Klan. All groups see injustice, and all believe they have some special responsibility that others are not able to see. That only by putting on their special get ups and getting their weapons, they can "solve" problems by taking direct action. By judging others, without the consent or a mandate from the people. They prefer to think not what the law allows, but what the law can't stop them from doing. They're sneaky, and that's your first clue, what they're doing is not something to be proud of. The need to sneak.
A reminder of what vigilantes DO. They judge others by their own pretend understanding of justice, and then punish those they think are unworthy. It always starts out with "heroes" shedding fake tears for the love of the country and the things that only they can change.
Because they "just care more" than everyone else. They're altruists - doing it out of the "Good" in their hearts with their weapons and "bullet resistant" vests. And if people don't agree with them? Then those people are ok to hurt.