The problem with these shenanigans is that they’ll key your car or slash your tires if they’re able to get out before you get back to the car. I always take a picture of someone’s license plate if they’re parked like assholes and I have to park close to them, since they’re assholes, and prone to asshole behavior. But knowing how cops operate, I could have a video of the guy keying my car, and have the dude in handcuffs in the police station, and the cops would be all “sorry, we’re powerless to help you”.