Serena Williams Backs br Nike's 'Powerful Statement' br With Colin Kaepernick Nike's recent "Just Do It" campaign featuring Colin Kaepernick has caused quite the controversy. Protesters are going as far as burning and dismantling Nike apparel, and the company's shares fell Tuesday, closing down 3.2. Serena Williams spoke of her support br of Nike's campaign, following her recent br win to proceed to the U.S. Open semi-finals. Serena Williams, br via CNBC Of course, not everyone shares br her sentiment. President Donald Trump said that br Nike's decision sends "a terrible message." Despite her support, Williams, who is br "especially proud to be a part of the Nike family," br still feels that athletes should be br wary of how they participate in social activism.