Yea, that's dumb. But what they don't tell you is that video represents a minute percentage of police departments around the country.
In most departments it's real easy for the average person to walk in or even call and make a complaint against an officer. I even know a few cops who have been fired after complaints against them.
If you watch this and assume this is the norm, you are just another one of the helpless Americans who is led to believe anything the media puts in front of you.