Don't expect people who don't have respect for themselves respect you or your property. Just stay away from them as much as you can, they might be up for a confrontation, this behaviour can be just provocation so don't buy it. In your case, if you notice someone parking always correctly and carefully to the point of OCD in addition to being respectful to everyone, choose parking next to them or in between them even if there are emptier spaces around. Sorry for this misfortune.
"The mark of a great car is one whose overall competence exceeds what you should expect from its individual components and the 1M does just that", Chris Harris.
2012 BMW 1M: TECH: Evolve Race+N55mids, Evolve IC, Michelin PSS, ER cp, aFe filter, CDVx, Vorshlag camber plates, P3Cars, OCC EXTERIOR: trunk spoiler, blacklines, black grills, IND goodies INTERIOR: Alcantara steering wheel, steel pedals, custom mats, MPower e-brake.