David Letterman Slams 'Despicable' Donald Trump, Says He's 'Repugnant To People'

David Letterman is not mincing words when it comes to the presumptive Republican presidential nominee, Donald Trump.

In a preview clip of Letterman's forthcoming NBC News interview with Tom Brokaw, the former late-night host sounds off on Trump, saying he's "repugnant to people."