Nerding Out 09/24/15

Nerding Out: Looking back at U.S. Papal visits

MSNBC’s Dorian Warren takes us back to October 1965, the date of the first-ever U.S. Papal visit, and discusses the history behind it with Rev. Matt Malone, Rev. James T. Bretzke, Rev. Monsignor Kevin W. Irwin, and Paul Elie. Plus, large-scale security experts Michael Kay and Marq Claxton talk 2015’s largest safety operation in U.S. history. ... more Duration: {{video.duration.momentjs}}