The drop in crime numbers has had many crime experts offering different theories as to why crime dropped. Better policing, concealed weapons, and even reduced lead exposure have all been cited. Now, in this article at LiveScience.com, we have one more potential reason to add to the list.
"There are more private security guards than there are police in this country," Cook said. "I believe that private action, though it has been largely ignored, deserves part of the credit."