This month marks the four-year anniversary of Colin Kaepernick kneeling in protest during the national anthem. The former San Francisco 49ers quarterback used his platform to make millions of football fans pay attention to how Black Americans are dying at the hands of police. He faced criticism early on, and then lost his job in the league. When people think of 'Kaep' now, they think of him as a social justice icon. But he’ll probably never play football professionally again. In this episode, host Claire Thornton sits down with USA TODAY digital editor Eileen Rivers and NFL columnist Jarrett Bell, as part of our newsroom's Leaders of Change project. We try to figure out why it seems like Colin Kaepernick couldn’t be allowed to do both social justice and the NFL. You can read more about Leaders of Change here, and nominate a leader you know.