Did you ever do anything to get back at a dealer/manufacturer?

So this was in front of my neighbor's house yesterday, and it reminded me of a truck I used to see in Champaign when I was in college. It was an extended cab Ranger that had a sign draped over the tailgate that read, "DO NOT BUY FROM HILL FORD". The extended cab's rear windows also said, "NO TO HILL FORD". This was long before the days of the potato camera, so I have no pictures. I saw that truck all four years of college, and it was never without its signs. I never met the owner, so I don't know any back story, but that truck made quite an impression on me.

Anybody here ever do anything like this?