League of Denial: The NFL's Concussion Crisis

October 8, 2013 / 1h 53m

Season 2013: Episode 2

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The National Football League, a multibillion-dollar commercial juggernaut, presides over America’s indisputable national pastime. But the NFL is under assault: thousands of former players have claimed the league tried to cover up how football inflicted long-term brain injuries on many players. What did the NFL know, and when did it know it? In a special two-hour investigation, FRONTLINE reveals the hidden story of the NFL and brain injuries.