Gun Law Reform

Las Vegas Metropolitan Police Department / AP

At Friday’s symposium “Responsible Reporting of Gun Violence” at the University of Pittsburgh, researchers discussed how to prevent mass shootings.

Russell Palarea, an operational psychologist who works in Bethesda, Maryland, works to thwart intentional and targeted acts of violence. He said that it’s a myth that people snap and then commit mass violence.

Rick Bowmer / AP

Democratic Gov. Tom Wolf is urging Pennsylvania lawmakers to outlaw devices known as bump stocks used in the Las Vegas mass shooting that allow semi-automatic weapons to mimic the rapid fire of an automatic weapon.

Wolf's statement on Tuesday comes on the heels of several lawmakers saying they will introduce legislation to outlaw the devices. Wolf calls them "unnecessary and dangerous."