Sorry to hear Furo 125i.
Some people just have no respect for others, let alone other people's property.
If it's any consolation, bumper damage are much easier to undo compared with panel damages. I would normally choose a parallel park space over a side-by-side for that reason, and also in the belief that incompetent parkers wouldn't even try.
As for technological solutions, I wonder if car manufacturers can have PDC activate the car horn if your car is parked and someone gets too close. Or, we can mandate the below?
http://www.youtube.com/watch?v=3PpsLYKGdr0