Documentarian Michael Kirk: League of Denial

Marcia Franklin talks with FRONTLINE producer Michael Kirk about his latest documentary for the series, League of Denial. The program looks at what the NFL knew about the serious and long-lasting effects of concussions on its players. The two discuss why Kirk wanted to produce the film, what he learned, and the future of football. They also talk about the beginning of his career, which was in Idaho.
Originally aired: 11/15/2013