There's an old saying in law enforcement: God
watches over drunks and cops.
There are a few more versions, but you get the point.
How many times have you picked up a local drunk and
dropped him off at his house or even the local hospital? The
answers is probably so many that you're not as careful with him as you
This video below is a excellent training tool.
It demonstrates exactly why we should never lower our guard with anyone.