FILE – In this Jan. 1, 2017 file photo San Francisco 49ers quarterback Colin Kaepernick stands on the sideline during an NFL football game in Santa Clara, Calif. Wisconsin Gov. Scott Walker sent a letter Monday Oct. 16, 2017 to NFL Commissioner Roger Goodell and Players Association Executive Director DeMaurice Smith saying he believes players are showing disrespect for the flag and veterans. Former 49ers quarterback Colin Kaepernick started the protests last season when he refused to stand during the anthem to protest racial inequality and police brutality. (AP Photo/Tony Avelar File)
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