InsideEdition - Colin Kaepernick Wears Muhammad Ali Shirt Amid Backlash For Kneeling Again - San Francisco 49ers quarterback Colin Kaepernick was once again defiant as he spoke to reporters while wearing a T-shirt with Muhammad Ali's image. The star arrived in Buffalo, New York, while wearing the shirt under a black blazer. Following the game, he donned the outfit again during a post-game press conference. The 49ers star faced a torrent of jeers from Buffalo Bills fans as he walked onto the field Sunday and the boos continued as he took a knee during the national anthem.