Astrophysicist and Director of the Hayden Planetarium in New York, Neil deGrasse Tyson joins Ari Melber to discuss when the military has a higher duty than Presidential orders and the historic importance of science and technology for National Security. Tyson also comments on the consequences of an “under-informed” electorate, noting that the “unraveling of an informed Democracy” occurs when those in power think “the wrong things about objective truths”.