The Center for Civil and Human Rights will present a new exhibit in Atlanta this month. It's called “Breaking Barriers” and will focus on historical moments when sports led to meaningful social change. Athletes and political leaders will be featured in the exhibit, including Jackie Robinson, Muhammad Ali, and Nelson Mandela. The Atlanta Hawks will host a preview of “Breaking Barriers” at Phillips Arena this month. Political sportswriter Dave Zirin and ESPN’s Kevin Martinez join us to talk about