New body camera footage from the Uvalde school massacre shows confusion over who was in charge at the scene and shocking moments of inaction by police. Meanwhile, a new report on the shooting outlines a series of failures by multiple law enforcement agencies, describing "an overall lackadaisical approach" by authorities on the scene. 

Also on today's show: Steve Bannon walks into court for day one of his trial for contempt of Congress ... Bernie Sanders says Joe Manchin is betraying both his president and his party.

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