Cops are so useless in horror films. They'll get a call like "Hey, this guy is trying to tear my guts out with a spoon" and the cops are like "We can't do anything about that, there's a kitten stuck in a tree. Now THAT is an emergency." They can't solve anything worth a damn either. Where did they get their badges? Cracker Jack boxes?
Edit: Oh, wait, let's not forget, they always show up too late. They show up right after the hero has already killed Spoon Man.