By exposing, I mean showing them up in a highly public subreddit/community/forum etc with solid proof (direct links showing them grooming someone they knew was underage, archived voice clips, webpages, screenshots etc) and getting that community to instantly turn on them, or in some cases getting them banned from the community because the mods saw the evidence and decided that they don’t feel safe having that person in their community.
Also, is vigilantism generally seen as a good or a bad thing?
Where do you draw the line?
Paedophilia? Extremism from the far right? From the far left? Stealing cars? Stealing bikes?
Report someone to the mods, if you think he or she broke the law. They will hopefully report it to law enforcement authorities.
Report someone to the mods if you think he or she didn’t stick to the rules for this community so they can decide.
Anything else can fast be denunciation, not vigilance. So it’s also kind of protecting yourself to not publish “evidence” of misconduct.
You call the mods when you see crime?
Hmmm