To that end, crime-tracking Web site has mapped all the 1,116 murders that took place in D.C. from 2005 to 2011.

Not surprisingly, the map shows what we’ve all long known — the majority of the city’s murders are clustered in parts of Ward 5 and east of the Anacostia River, while fewer than 10 happened west of Rock Creek Park.

Homicides in D.C. have steadily declined since 2008, and last year they hit a 50-year low. So far this year there have been 30 killings, 25 percent fewer than at the same time in 2011.

Martin Austermuhle blogs at DCist . The Local Blog Network is a group of bloggers from around the D.C. region who have agreed to make regular contributions to All Opinions Are Local.