[USA] Understanding Risky Facilities / US. Office of Community Oriented Policing Services, March 2007
PDF - http://www.cops.usdoj.gov/files/ric/Publications/e02071462.pdf
Ronald V. Clarke and John E. Eck
Problem-Solving Tools Series No. 6
"In any large city just a handful of bars give the police far more trouble than all the rest put together. The same is true of many other types of establishments, such as schools, convenience stores, and parking lots. In each case, just a few produce far more crime, disorder, and calls for police assistance than the rest of the group combined. This phenomenon, called “risky facilities”, has important implications for many problem-oriented policing projects. In particular, it can help police focus their energies where they are needed most and can help in selecting appropriate preventive measures. This guide serves as an introduction to risky facilities and shows how the concept can aid problem-oriented policing efforts by providing answers to the following key questions."