Here's another touchy subject for me. As someone who spends a lot of time in the yard, I know first hand how the concept of "yard etiquette" is lost on 98% of people.
When I'm stripping a car there, I approach it like I'm performing surgery. I don't break parts unless they're already badly damaged or I know the car is going to the crusher in a day or two. I don't cut wires unless I absolutely have to. Before I leave, I gather up any loose parts I don't want and place them inside the car to keep them out of the way, and out of the weather, in case someone else needs them.
There's nothing worse than finding a car with parts you might want, only to discover that some ham-handed neanderthal has destroyed half the dash just to remove a headlight switch. Or that some near mint door panels have been removed and thrown on the ground, and then stepped on and rained on. I could fill a full screen with specific examples of what I've seen.
I've also witnessed idiots breaking windows, taillights, etc. just for the fun of it.
Just imagine if these yards had a way to enforce a "you break it, you bought it" policy.