It plots homicide per capita per square mile. These cities have the most homicide per person per square mile.
What does that even mean?
I'm not sure - and if anyone knows of a proper name for this metric, please let me know.
FWIW I consider it the "density" of homicide - where density is both social density (ie "per capita") and geographic density (ie "per square mile").
I think those attributes of homicide express important social attributes of violence, like proximity and intensity. In these 28 cases, where the social fabric in real physical space is most "war-torn". Where killing hits "closest to home". Where there are witnesses and bystanders to murder.
Clicking on the city will show the underlying calculations and the rank of the city. I will try to clean those up - this is a work in progress. Feedback and questions are welcome.
For future work: I am most interested in how illicit trade between clusters/close proximity pairs represent a kind of "bazaar of violence" - a characterization justified by DEA's map of TCO's.
Example corridor: Newark to Richmond. In between, connected via the I-95, homicide is most dense in Trenton (1), Newark (2), Philadelphia (23), Baltimore (7), DC (14), Richmond (11). In 2014, these six cities connected via I-95 summed 730 homicides.
Police between Washington and New York call the highway ''Cocaine Alley.'' In Georgia and the Carolinas, it's ''Cocaine Lane.''
Stretching 1,866 miles from Miami to Houlton, Maine - from tropical metropolis to potato town - I-95 has earned the dubious distinction of being the nation's busiest drug-smuggling corridor.
Source Data for "density" of homicide interactive map:
accessed a few days ago