Sam Bieler, Urban Institute: “In some communities, gun violence is a rare and alarming occurrence. In others, it’s just a fact of life. The latter is the sad reality faced by some American communities and neighborhoods. A study in Boston found that half of all gun violence was clustered in less than 3 percent of intersections and streets. In Washington, DC, a small number of schools were within a few hundred feet of a disproportionate number of gunfire incidents. Who’s most affected? Young men—particularly young African Americans—disproportionately go to the hospital for gun-violence assaults, but the concentration of violence is even tighter than broad demographics suggest. In one African American community in Chicago, 41 percent of all homicides were concentrated in a social network consisting of less than 4 percent of the population. However, gun violence is an issue that extends beyond particular neighborhoods: domestic violence, firearm accidents, and injuries from stray bullets can affect Americans from every neighborhood and all walks of life.”

• See also via WSJ.com – Hundreds of Police Killings Are Uncounted in Federal Stats – FBI Data Differs from Local Counts on Justifiable Homicides – “The result: It is nearly impossible to determine how many people are killed by the police each year.”