If you think about it cynically, one of the functions of the police is to provide a sort of society-wide revenge service. Unfortunately for this sub, it’s usually kind of boring. When cops do take exceptional revenge, it’s usually unfortunate and icky, like a dirty beating in the no-camera areas of the copshop, or giving someone the silent-patrolman treatment during transport. Fortunately, most cop revenge isn’t dramatic - it’s procedural. You misbehave, we do the paperwork, and eventually some consequences happen, or not.
Sometimes, however, you get a chance to take a bit of vengeance that is (i hope) the very definition of professional.
For a time, I was a small-town Canadian cop, working in $hicksville, $province. Several years before I came to work in the town, there was an event which entered town legend (and made national news - the funny little throwaway story they go to just before the end of the broadcast). Some kids committed an act of spectacular and iconic vandalism, and cost the town quite a bit of money. They were all caught, tried and sentenced to probation terms with restitution. I would love to provide details, but anything more would be immediately identifying.