Trump and Conspiracy Theories

In this Aug. 2, 2018, file photo, David Reinert holding a Q sign waits in line with others to enter a campaign rally with President Donald Trump in Wilkes-Barre, Pa.

Fareed Zakaria, Washington Post columnist and host of CNN’s Fareed Zakaria GPS, talks about his latest CNN special, examining President Trump's proclivity for conspiracy-theory thinking, its history in the U.S., and what his claims about voter fraud could mean for the 2020 election.