A friend of mine accidentally parked her car across someone else's driveway. She went to an appointment and when she came back the owner of the house had covered her car with toilet cleaner. The entire car had to be taken apart to clean it off, and the car had to be repainted from top to toe. The bill was R50 000 (if directly translated into dollars, about $6200.)
Yes, my friend was careless but there are civil ways of dealing with community problems. The home owner could have called the traffic department to have the car towed, for example. Same goes for this situation. If we can't deal with problems in a civil and socially acceptable way, well, then we're still behaving like two year olds, only with real guns instead of plastic ones.