Oh man, totally OT, but all that comes to mind about the whole reminding people of the rules and getting aggression back was this one time I was driving home and had the right of way to turn onto my street and some idiot at a stop sign decides to gun it for the road I had to cross. I have enver been so close to an accident in my life and I honked my horn and yelled inside my car more out of surprise and fear. The next thing I know I'm parked across the stree from my house and the same guy followed me home, got out of his car, and was screaming bloody murder at me. I don't think I;ve ever been so scared in my life. Never would have happened if (a) guy didn't feel like he woened the road, (b) guy didn't have anger issues, and (c) people followed the rules of the road. I agree with you 100% about how people nowadays are totally centered around themselves. Not everybody, obviously, but it's always 'me' who comes first and if 'I' want to do this, screw what anybody else thinks.
I wish the whole flash photography thing doesn't bother me as much as it does. I have those other pet peeves around the Parks as well (the screaming for not reason other than screaming, etc.) that I overlook as well, but for me flash photography isn't a small pet peeve, it's a big one. Maybe I'll blame the genius who took a flash photo of the Blue Bayou while I was eating my lunch by myself and I was situated directly across from where the boat was at a waterside table. Maybe I've been holding a hugr gruge since then, lol.
But I guess this is why I like keeping this thread bumped - what is the saying ... "an ounce of prevention is worth a pound of cure"? Something like that. The more people who know not to do it for any reason (cruddy photos, against the rules, painful on eyes, etc.) before, the better.