"Even the most dangerous cities in America can have relatively safe neighborhoods, as there is more variation in crime within most cities than between cities. But using exclusive data developed by NeighborhoodScout, and based on FBI data from all local law enforcement agencies in America, we here report those specific neighborhoods in America that have the highest predicted rates of violent crime per 1,000 neighborhood residents of all. Violent crimes include murder, rape, armed robbery, and aggravated assault. These neighborhoods are the epicenters of violence in America, where social issues are likely to ignite into violence and spread."
More maps, photos from Criminal Justice.