But the far worse problem IMO is that this cop is dirty, corrupt, untrustworthy, and should be punished for stalking this man, and yet he surely will not be. Worst case, he might catch some administrative sanction or maybe be fired - he won't go to jail like he should for this misbehavior.
If you have 1 dirty cop and 100 who ignore his bad behavior, you actually have 101 dirty cops. We need a way to deal with this in our society without resorting to the absolutes of "defund the police" or "back the blue".