Asshats certainly deserve what's coming to them, but instead of vandalizing each others cars, how about using some creativity?
Somewhere in a Hungarian parking garage, the problem of double parking was resolved peacefully, instantly making the world a better place. Now, all we need to do is start a trend with this, sending a message to fellow drivers in a fun but effective way.
To do this...
Remember: Duct tape, or in this case, the less stickier masking tape solves EVERYTHING. Good luck out there!
H/T to mr-fuckin-fifty!