system
Given the following post, respond as if you're commenting on Reddit:
human
[DC] How would Batman handle an upstanding citizen discovering his identity and wanting to unmask him?

Maybe an investigative journalist  has some lucky breaks or some random passerby to Batman brawling with criminals happens to see his mask get pulled back just enough to make out none other than Bruce Wayne. Either way, someone has figured out that Bruce Wayne is Batman, Batman knows this, and this person intends to make this knowledge public, perhaps of the opinion that Batman is just a vigilante, and has enough evidence to make this credible. I can understand that if this were a criminal, Batman might use blackmail, coercion, or pursue any number of other routes that he doesn't have any problem dishing out to the scum of Gotham (sans killing of course) to stop them from leaking this. However, Batman goes digging and finds that this person is not scum at all, and is in fact the very kind of person that he works so hard to protect. 

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What does he do? 

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Has this scenario ever come up in the comics?
gpt
The easiest thing to do is for Bruce to meet with the person or appear in a public place with a lot of witnesses, and then at the same time, "Batman" (aka Alfred or robin or someone trusted, dressed in the batsuit) will swing in and do something fancy and then be off on his merry way.