It’s been 16 months since a 64-year-old man opened fire into a crowd at the Route 91 Harvest Festival concert grounds on the Las Vegas strip.

The shooter killed more than 50 people, and wounded nearly 900 others from his window at the Mandalay Bay Resort and Casino before fatally shooting himself. There was hope that the FBI investigation into the tragic events of October 2017 would reveal the shooter’s motive. But the bureau’s report, released Tuesday, didn’t shed light on any reasons why the Harvest Festival was targeted. But despite never knowing what could have gone on in the mind of the man who carried out the events of that day, numerous conspiracy theories have popped up, not just about the shooter, but speculation that there was more than one gunman.

Today on AirTalk, Larry finds out the latest in what was revealed during the FBI’s investigation, and consults with a historian for a deep dive of the psychology behind conspiracy theories.

Guests:

Joe Schoenmann, host and senior producer of State of Nevada, the daily talk show on KNPR, our sister affiliate in Las Vegas, Nev.; he tweets

Kathryn Olmsted, professor of history at UC Davis whose areas of expertise include the study of conspiracy theories; she is also author of the book, “Real Enemies: Conspiracy Theories and American Democracy, World War I to 9/11” (Oxford University Press, 2011)