After a while it would probably give a whole new meaning to "Breaking Up".  What a sick son of a gun.  I've never understood at all those type of people that are into the dead.

It all comes down to accountability. Society no longer holds people accountable for many sins. So people move on to other sins to test the boundaries. Everyone here who has kids has seen the same sort of behavior; if you don't punish the child for doing something wrong the first time, they will not only repeat the behavior, but they will try something even wilder, just to test you and see if you'll set boundaries.
Granted, most people will never get to the level of wanting to take sexual liberties with a dead girl, even if there is total anarchy in place of society. But what is truly scary is that the veneer of civilization is very thin. Look what went on in New Orleans after Katrina. Gangs roamed freeley, raping and looting. Cops were caught on video participating in looting.
People no longer have the internal control to behave themselves when external control is removed. And that is what is downright frightening.