Veteran journalist Dan Rather thinks the U.S. is facing an ‘existential crisis,’ but one the country can survive. His new book is called What Unites Us: Reflections on Patriotism. Sam and Dan talked in front of an audience at the Brooklyn Academy of Music last month. Email the show at email@example.com or tweet @NPRItsBeenAMin with your feedback. Follow Sam on Twitter @samsanders and producers Brent Baughman @brentbaughman and Anjuli Sastry @AnjuliSastry.