If you haven’t read Rafael Mangual’s book it’s AWESOME!!  It’s an easy read pertinent to what is going on in policing and criminal justice. If you have never listen to the Glenn show before it is an awesome podcast.
This episode of the gun show highlights much of what is discussed in the book with Glenn Loury, playing devil’s advocate, and Rafael Manuel answering all his questions. I recommend listening to this podcast and then going out and getting the book. 
Glenn Loury (Manhattan Institute, Brown University) and Rafael Mangual (Manhattan Institute, Criminal (In)Justice: What the Push for Decarceration and Depolicing Gets long and Who It Hurts Most)
— Read on bloggingheads.tv/videos/65115