Parkland teacher calls arming school faculty 'asinine'

Thursday marked the first anniversary of a deadly shooting at Marjory Stoneman Douglas High School in Parkland, Florida. Across the country, Americans paused to observe a moment of silence in honor of the 17 lives lost in the tragedy. Amna Nawaz talks to Sarah Lerner, one of the teachers at school during the crisis, about how she has coped and why having a gun wouldn't have helped her.