Today, one of their cars was mostly-blocking my car (did they use their driveway space? Noooo!) and also playing something uninteresting at full volume. I started backing up very slowly out of my driveway, and I think I could have made it past without scraping his car - but the guy came running out in a hurry, turned off the radio, and moved his car. He looked at me kinda funny as I was leaving.
If I could have only gotten out by scraping his car, would I have? I really don't know.
I can only hope that my apparent disregard will have had him reconsider his apartment habits.