I'm reposting this from elsewhere because people asked for it.

There are two types of police--peace officers, and law enforcement officers.

Let's say you come out of the bar at closing time.  You get in the car and feel a bit dizzy.  Obviously, you are not in shape to drive.  So you warm the car up for a couple of minutes, shut it off, recline the seat and try to sleep some of it off.

You wake up to a knock on the window.

A:  The peace officer says, "Sir, what are you doing?"

"I don't feel safe to drive, sir, so I figured I should sleep for a bit."

Peace officer:  "That's a good idea, sir, but I can't let you stay here like this.  I'm going to call a cab.  I'll log the incident, and you can come pick your car up in the morning.  Thanks for being responsible."

The next morning you wake up sober, realize you had too much to drink and your judgment was shot, and are grateful the cop helped you get home. 

B:  The law enforcement officer says, "Sir, what are you doing?"

"I don't feel safe to drive, sir, so I figured I should sleep for a bit."

"Are your keys in the ignition? And you've been drinking? That's operating under the influence!  You're under arrest!  You're going to jail to be booked, I'm going to write up the bust for my promotion file, and your car's going to the impound yard." 

Twenty-four hours, $200 in impound fees, $600 in legal bills, $250 in bail, a bad meal, a jail cell and a visit with a judge later, you realize why you hate pigs.

We need more peace officers.