It's wrong to take advantage of the deceased.
Hank's wife dies and Hank can't afford a nice headstone for her.
Hank wants to get a headstone for his now-deceased wife.
Hank finds a modestly-priced headstone and gets it for his wife.
Hank goes to a graveyard at night, removes a headstone from a grave, and re-engraves it for his wife.
Hank honors his wife's memory and leaves a memento for others to see.
The family of the person Hank robbed are horrified that someone would steal a dead person's headstone.