On day 9 of testimony in Derek Chauvin’s murder trial in the death of George Floyd, pulmonologist Dr. Martin Tobin said Floyd died from a low level of oxygen. The doctor kept jurors engaged during questioning as many were taking notes and leaning into videos while observing. Aired on 04/08/2021. » Subscribe to MSNBC: http://on.msnbc.com/SubscribeTomsnbc As part of its commitment to providing breaking news coverage throughout its daytime schedule, MSNBC has a block of "MSNBC Live" programming throughout the day, with different anchors splitting up the hours. This portion of the block is anchored by Ayman Mohyeldin. As with the other "MSNBC Live" programming blocks throughout the day, the Mohyeldin-anchored show explores the day's developments in news and politics so the network's viewers can continue to be informed of the latest happenings. In addition to covering breaking news, the show includes newsmaker interviews and analysis of the latest stories. 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 #DrMartinTobin #DerekChauvin #MSNBC Pulmonologist Captivates Jurors With Demonstrations, Questions During Witness Testimony