The Dallas Cowboys, led by owner Jerry Jones, center, take a knee prior to the national anthem Monday night in Glendale, Ariz., ahead of the team's game against the Arizona Cardinals.
American gold medalist Tommie Smith (center) and bronze medalist John Carlos raise their fists in the air in a black power salute during the playing of the U.S. national anthem at the 1968 Olympics.
A $30 million partnership between the NFL and the National Institutes of Health is set to expire at the end of August, with much of the NFL's pledged money unspent. Above, NFL Commissioner Roger Goodell in February.
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A Colorado coroner says that former Heisman winner, Rashaan Salaam (pictured in 1994), died of a self-inflicted gunshot wound. Salaam's body was found at a Boulder park on Dec. 5 this year.
Minnesota Vikings players bring down Washington wide receiver Art Monk during an NFL game in 1992. Monk was one of the lead plaintiffs in the $1 billion settlement with the NFL over brain injuries among former players.