On Slate's The Gist to discuss whether has conceal-and-carry helped armed civilians defend themselves against mass public shootings

John Lott talked to Mike Pesca about whether conceal-and-carry has helped armed civilians defend themselves against mass public shootings (Monday, December 21, 2015, podcast).  Mike Pesca is the host of the Slate daily podcast The Gist. He also contributes reports and commentary to NPR.