Former residents of Northview Heights in Pittsburgh remember marching bands and days at the recreation center. But that was before shootings and drugs became commonplace for some 1,600 residents of the public housing project.
This interactive map allows you to explore all the incidents of mass shootings in the US dating back to the 1980s.
The disgruntled former employee who shot and killed two reporters live on air Wednesday morning wanted his crime to go viral. Knowing that, how should we talk about it on social media?
The Virginia shooting captured on live TV was a shock for many, but the type of violence others have witnessed happens countless times in many urban neighborhoods without the TV cameras.
When infectious disease expert Dr. Gary Slutkin returned to the US after years of working abroad on HIV, cholera and TB, he was struck by how much the spread of gun violence here reminded him of the spread of disease.
Handguns and assault rifles are completely banned in Britain, and a very small percentage of the country's police officers even carry guns, something that has led to a lower number of fatal police shootings.
The killer prayed with worshipers for an hour before brandishing weapons and killing them. Social media wondered how South Carolina could keep the Confederate flag flying high outside its statehouse after US, state flags lowered to half-staff in respect.
Research commissioned by the CDC in 1993 showed that gun owners faced higher risks for both homicides and suicides. But the NRA quickly moved to silence the studies — and make sure no other similar studies would get federal funding. They succeeded.