The Thin Purple Line

The thin blue line - the concept that the police are the line between law-and-order and chaos in society - is important to the safety of law-abiding citizens.  I want to suggest that there is also a thin purple line. Purple is the color of royalty. I don't want to equate government with royalty, but I believe that a thin purple line is also vital for the  peaceful and orderly functioning of society. The line of proper governmental laws and courts keep the thin blue line from becoming a thick red line of the police state.