What the Doomsday Cults of the '70s Can Teach Us About Radicalization 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 Tracy Parks, 12, of Ukiah, Calif., looks at a photographer as her father, Gerald, rests in a Georgetown, Guyana hotel, Nov. 24, 1978. Tracy and her family were part of Rev. Jim Jones' cult. ( Ken Hawkins / Associated Press ) Produced by Isabel Angell Hosted by Todd Zwillich Produced by PRI and WNYC