People interested in how the NFL has been trying to ignore the concussion issue for decades should watch the Frontline program League of Denial. http://www.pbs.org/wgbh/frontline/film/league-of-denial/

It ties directly into the film Concussion. Will Smith stars as the Dr. who first noticed CTE in retired NFL football players. Smith is not quite the box office attraction that he used to be, but, nevertheless, the NFL is probably not too thrilled about the release of this movie.