Unsigned NFL quarterback Colin Kaepernick, one of the original faces of the NFL sideline protests during the national anthem, will play a leading role in Nike's 30th anniversary "Just Do It" campaign. The former San Francisco 49er tweeted an ad that says: "Believe in something. Even if it means sacrificing everything." While Kaepernick is receiving support on social media, some critics reacted by destroying Nike gear like sneakers and socks.
