One of the roles of patrol officers is to PREVENT crimes - not just respond to calls. Within the criminal justice system as a whole, there are certain programs or methods that impact crime more than others, and even some programs that we historically have supported but actually are neutral in making any impact or actually, instead, INCREASE crime.
So here's the question: if we cannot eradicate crime because it is indeed a natural condition of society, what should the primary purpose be of policing? OR can we truly eradicate crime?