Caleb Gayle, a native Tulsan, tells Lawrence O'Donnell that it was "quite powerful" for President Biden to describe the Tulsa Race Massacre in "graphic detail." Jelani Cobb, a staff writer for The New Yorker, says President Biden's honesty is needed because there are still white people in Tulsa who doubt the magnitude of the massacre. » Subscribe to MSNBC: http://on.msnbc.com/SubscribeTomsnbc​ About The Last Word with Lawrence O'Donnell: Drawing upon his experience as a former chief of staff on the Senate Finance Committee and as an Emmy-winning executive producer and writer of "The West Wing," Lawrence O'Donnell examines the compelling and impactful political stories of the day. O'Donnell convenes diverse panels of guests, including a variety of politicians and cultural voices, to offer unique viewpoints and perspective. In his signature style, O'Donnell highlights the latest news developments and offers his take on the political stories driving the national conversation. MSNBC delivers breaking news, in-depth analysis of politics headlines, as well as commentary and informed perspectives. Find video clips and segments from The Rachel Maddow Show, Morning Joe, Meet the Press Daily, The Beat with Ari Melber, Deadline: White House with Nicolle Wallace, Hardball, All In, Last Word, 11th Hour, and more. Connect with MSNBC Online Visit msnbc.com: http://on.msnbc.com/Readmsnbc​ Subscribe to MSNBC Newsletter: http://MSNBC.com/NewslettersYouTube​ Find MSNBC on Facebook: http://on.msnbc.com/Likemsnbc​ Follow MSNBC on Twitter: http://on.msnbc.com/Followmsnbc​ Follow MSNBC on Instagram: http://on.msnbc.com/Instamsnbc​ #MSNBC #Biden #Tulsa