Robert Peterson, 24, was shot and killed in Pittsburgh, Pennsylvania, on May 14, 2011. His death came during a year of heightened gun violence in Pittsburgh and Allegheny County, when many fatal shootings disproportionately affected people in their twenties.

The case sits within a larger pattern of violence that strained the city’s neighborhoods and prompted public calls for stronger police response and broader strategies to address underlying causes of crime.

If anyone knew Robert, witnessed the shooting, or has information that could help bring clarity to what happened, please share what you know.