I'm not sure if this qualifies... People who used to mark tons of seats with watchtowers at assemblies used to make me see red. Especially since there were announcements saying to only mark seats for the people in your car group.
I'd see like ten or more seats all with WTs draped on them. Fuck, that still pisses me off just thinking about it. Well, I'd look around to make sure nobody was watching, then I'd remove all of them. Soon new arrivals would claim the seats. It was fun to see the original seat saver come back and find all the seats he marked with other people in them, camped out. He'd be like "Hey! These seats are mine! What is going on here?" and I'd be like "Well, they weren't marked a few minutes ago when we got here...I saw the attendants removing WT's over there though. Looks like you'll need to go find somewhere else to sit, because I'm here now".
I only did it out of a sense of justice toward those poor elderly ones and for the young families with small kids in mind. Plus, how many times had I not been able to find a decent seat because some asshole marked them all up? Plenty. So I guess part of it was for revenge. Yeah, I had to lie a little, but it didn't bother my conscience. I felt like I was doing the right thing.
TB-