0:29 minutes

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.

Your video will resume shortly.
We're sorry, this video is no longer available.

View other videos for “Frontline”

Video Player : Video ID