of course you are at fault: if you were not there in the first place, they would not have damaged your vehicle... which, makes me think, if the BMW did not produce that vehicle, there would be no vehicle to damage... i guess, it is not your fault, it is the BMW's fault... but, come to think about it - if there were no cement wall, there would be nothing to damage the car against... so, maybe it is the city's fault...

dude, if you let them play this game, they will blame the mother nature for having mankind on earth!!! what does your insurance say? are they going after the wrecker??