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League of Denial: The NFL's Concussion Crisis

Season 32 Episode 2 | 1h 53m 41s

The National Football League presides over America's indisputable national pastime, but the league is under assault: Thousands of former players have claimed it tried to cover up how football inflicted their long-term brain injuries. 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.

Aired: 10/07/13

Rating: NR

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