That doesn’t make any sense. What is the scenario where someone sees your face and then tracks you and your family down? You think you’re going to intervene in a crime and hand over criminals to the police? And the criminals are going to get out and walk around the neighborhood until they find you?

What are you actually planning on doing while wearing a mask? Are you going to run up and intervene if you witness an assault? A drug deal? A carjacking? A shooting? The odds are much greater you’ll be retaliated against violently in the moment if you come upon some crime.

The Guardian Angels in NYC patrolled in brightly colored uniforms with their faces exposed. It’s their actual presence that was supposed to reduce crime. Not actually intervening in criminal incidents. Neighborhood watches are real things that people do. Criminals don’t commit crime where there are witnesses. They do it where they can get away with it. If they know an area has regular people walking around a lot at night, they will move elsewhere.