Community policing was an alternative policing strategy developed in the mid-70 off of studies such as the broken window theory and your articles' theory that less cops working with a community would improve crime rates. It's basic tenants were to help communicate with citizens about issues, instead of being a silent "foreign" enforcement group that were there just to arrest and suppress crime. Google it you'll find some good stuff, not in complete agreement but some decent ideas. You'll usually have it defined as a liberal theory.