Guys at the shows and cruises are really rude

Inkjunkie is correct in that it is a society problem over all.Two years ago we move to a 55+ community and I was shocked how rude so many of these people are.I thought those of us in the 55+ age bracket were brought up like I was as far as manners and respect for others property.Not true...if I say excuse me or thank you they look at you like you are from Mars or something.If somebody leans on my car they are politely asked not to. I do have to admit I've thrown out the piece of junk comment but not where it can be heard.