Stoneman Douglas student tells 60 Minutes why arming teachers is "stupid"

One of the Florida school shooting survivors leading a movement that has already gotten Florida gun laws changed tells 60 Minutes why arming teachers in the classroom is "stupid." Emma Gonzalez and her mother Beth speak to Sharyn Alfonsi for a segment to be broadcast on 60 Minutes on Sunday, March 18 at 7:00 p.m. ET/PT.First of all, they have-- Douglas ran out of paper for, like, two weeks in the school year, and now all a sudden they have $400 million to pay for teachers to get trained to arm t