Amid loud chants of ''USA! USA! USA!,'' San Francisco 49ers quarterback Colin Kaepernick knelt for the national anthem Sunday in his continuing protest against racial oppression and police brutality. Outside the stadium, vendors sold shirts with Kaepernick's image in the sites of a rifle scope, and fans tackled a dummy dressed up like the quarterback . The game against the Buffalo Bills marked Kaepernick's first start of the season after Blaine Gabbert was benched. More...