I think that the spirits will do as they please, no matter who comes to visit them. Some spirits are just mean and don't want to be bothered, so if Auntie May decides she wants to give them a cookie she's going to get that cookie thrown back at her and a few mean words [or EVPs].
You can be polite and considerate all you want but there is no reasoning with these spirits.
I can agree and say that most people don't deserve to be harrassed by evil spirits, but not every one. Gacy killed 33 known young men, he is the epitomy of evil and deciet, doesn't he deserve a little something evil knocking at his door?
As for the fools who desecrate cemetaries, they DO deserve the anger of the resident ghosts. Can you imagine sleeping peacefully in a quiet forest than, all of a sudden, THUNK, a shovel right on your coffin? Or your grave marker being thrown into a pond, now no one knows where you rest! And people trample all over your resting place now! What a rude awakening! I don't blame the residents of disturbed places for disturbing those who come visit!
While I want to give people the benefit of the doubt and say, it was peer pressure or they were drunk, you just don't do that! How the heck were they raised?! Being bored isn't a good enough reason to push over grave stones. Being bored doesn't mean, lets go write I LOVE THIS GIRL on a grave stone thats been standing since before you were born. God knows you'll break up in two months!! Can you imagine, with all these drunk parties, how many people's graves have gotten peed on? Maybe I am thinking a little too hard into this, but pure recklessness and ignorance should never go unpunished. So if the forest preserve rangers or the cops aren't concerned enough with it, than the people who rest there obviously felt like they needed to do something.
And being young isn't an excuse either. I'll be turning 20 this weekend and I have NEVER even imagined doing anything like this in my life!!!. People of ALL AGES have desecrated the cemetary, from the punk teenagers who spray paint, to the people obviously strong, desperate and familiar enough with debt who grave rob. Being twice my age doesnt make a 40 year old any better than me, just older. It is the person who decides who they are and I shouldn't be marked off as 'ignorant, arrogant and downright stupid' for my age.