The Last Word with Lawrence O'Donnell 09/22/17

Trump: NFL owners should fire players who 'disrespect the flag'

Trump says he might have made a mistake – by supporting Luther Strange in the Alabama Senate race. Joy Reid, EJ Dionne, Karine Jean-Pierre & Kurt Bardella react to this, what Trump says about football players like Colin Kaepernick, and a "see-through" border wall. ... more Duration: {{video.duration.momentjs}}