Book excerpt: For criminal justice practitioners who deal with drugs and crime day in and day out, the reality of the drugs-crime nexus is indisputable. In a manual designed to help police chiefs and sheriffs control drug abuse, the International Association of Chiefs of Police (IACP) stated unequivocally its belief in?a significant though complex? relationship between drug abusers and criminal offenders. Change one group, IACP proposed, and you change the other:?If there is a reduction in the number of people who abuse drugs in your community, there will be a reduction in the commission of certain types of crime in your community.?