The Parkland, FL shooter had a history of violent behavior. Police were called to his house many times, but they did not arrest him because the school board had an agreement with the police not to arrest...

In the wake of the mass shooting in Newtown, Conn. and the increased national debate over firearm regulations, Suffolk University’s philosophy department decided to host a gun rights colloquium for students...

Jared Lee Loughner was allegedly armed with a Glock 19 and known to have loaded it with a magazine holding 30 bullets. He then proceeded to shoot up a supermarket, killing six people and injuring 20. ...