Tonight on The Last Word: Harsh rulings and ethics scandals erode trust in the Supreme Court. Also, newly unredacted information sheds new light on the classified documents case. Plus, the Los Angeles county sheriff investigates a deputy's use of force. And a new documentary shows how military veterans become radicalized. Jamelle Bouie, Bradley Moss, Barbara McQuade, Raycine Ector and Charlie Sadoff join Lawrence O'Donnell.