This report discusses gang activities in urban areas. From the text: "According to the Los Angeles Police Department, in the City of Los Angeles, approximately 60 percent of crimes occur at 10 percent of the properties--a statistic that is probably not exclusive to Los Angeles. The purpose of property abatements is to target the properties where people are repeatedly arrested but where criminal activities nonetheless persist. When these 10 percent of properties are connected to gang activity--which is increasingly the case--a nuisance property abatement action is initiated by prosecutors assigned to Project T.O.U.G.H. (Taking Out Urban Gang Headquarters), a specialized unit of the criminal branch of the Los Angeles City Attorney's Office. The nuisance abatement action improves conditions at the property so that criminals will not be able to use the property anymore. Gang property abatements are a critical, but sometimes overlooked, weapon in law enforcement's arsenal against gangs. Community members who work, live, or go to school in gang-plagued areas often are aware of private properties in their neighborhoods that are used by gangs to engage in criminal activity. For gang members, these properties are essential to their survival because they provide a safe haven to sell drugs and engage in other criminal activity."
National Youth Gang Center: http://www.nationalgangcenter.gov
National Gang Center Bulletin (September 2009), no.2