One of these jerks is not like the other...
Taking up two parking spots for one car is a good way to piss off other drivers for no reason. If you do it, you're probably a big jerk.
But if you're in that parking lot with a ton of available parking spaces and you decide to move the offending vehicle, you are a much bigger jerk.
And since the clowns in this video also damaged the rear driver's side quarter panel with their stunt, they're also guilty of property damage. If they get caught, do they think it'll be worth it, probably not.
Just let it go. Or, better yet, call local parking enforcement. A parking ticket would have done the trick just fine.