Disrespect at a car show.

At many of the shows I go to they actually have to make an announcement for people to please not touch the cars. It's very worrisome when you cannot even leave your vehicle to look at the other cars and come back to find that someone has either stolen something from your car or worse yet scratched your vehicle. I try to be vigilant at cruise ins and at shows but man this world is so full of people who have NO respect for other peoples property.