Colin Kaepernick felt so strongly about his message of social and racial equality that he not only took a knee during the U.S. national anthem to spread the word, but also very likely ended his career in professional football at the same time.
His controversial protest also might have cost the NFL more than $200 million in lost advertising revenues — and many millions of TV viewers — as some Americans reacted negatively to his perceived slight towards the country and the U.S. military.
