The Long Evolution of the NRA Listen Download Embed Share Share this on Facebook (Opens in a new window) Share this on Twitter (Opens in a new window) Share this via Email May 20, 2016: Republican presidential candidate Donald Trump speaks at the National Rifle Association convention in Louisville, Ky. ( Mark Humphrey / Associated Press ) Produced by Oliver Lazarus Hosted by Todd Zwillich Produced by PRI and WNYC