U.S. Capitol Police Officer Harry Dunn testified in the trial of several members of the Oath Keepers and disputed the claim that they were attempting to help police officers during the January 6 Capitol riot. NBC's Ryan Reilly reports. » Subscribe to MSNBC: http://on.msnbc.com/SubscribeTomsnbc Follow the MSNBC Midterms Elections guide to the important races across the United States as Americans prepare to cast their votes. Countdown to the Midterms: https://on.msnbc.com/3KlULq8 Follow MSNBC Show Blogs MaddowBlog: https://www.msnbc.com/maddowblog ReidOut Blog: https://www.msnbc.com/reidoutblog 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, The Beat with Ari Melber, Deadline: White House, The ReidOut, All In, Last Word, 11th Hour, and Alex Wagner who brings her breadth of reporting experience to MSNBC primetime. Watch “Alex Wagner Tonight” Tuesday through Friday at 9pm Eastern. Connect with MSNBC Online Visit msnbc.com: http://on.msnbc.com/Readmsnbc Subscribe to the MSNBC Daily Newsletter: 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 Capitol Officer Harry Dunn Testifies In Oath Keepers Jan. 6 Trial