WASHINGTON, DC - MAY 17: Doctor Alondra Nelson, DeRay McKesson, Dr. Joanna Mountain and Luvvie Ajayi speak on a panel moderated by Joshua DuBois(L) during the "HISTORY Brings "Roots" Cast And Crew To The White House For Screening" at the Eisenhower Executive Office Building on May 17, 2016 in Washington, DC. (Photo by Paul Morigi/Getty Images for History)
