Parkland deputy's arrest sparks questions about arming teachers

New safety questions have emerged following the arrest of former sheriff's deputy Scot Peterson, who's charged with negligence for failing to intervene in the massace at Marjory Stoneman Douglas High School. A new article in the Tampa Bay Times by Emily Mahoney asks: "Could an armed teacher be arrested like Parkland cop Scot Peterson?" Mahoney joins CBSN to discuss what's at stake.