Has anybody experienced other riders being harsh on your bike or equipment?

Today a guy forced his bike up that was partially stuck in the rack, my NEW bike unluckily had to be next to his. He put a pretty big scratch on my frame the size of a quarter right on the top bar. I was kind of bummed cause I saw him monkeying around and wasn't paying full attention till I got to my bike and he was exiting. I just might have to buy a few cool stickers for scratches..