We speak with political sportswriter Dave Zirin about his latest book, The Kaepernick Effect: Taking a Knee, Changing the World. Dave Zirin, is the author of ten books on the politics of sports, most recently, The Kaepernick Effect: Taking a Knee, Changing the World. Named one of UTNE Reader’s “50 Visionaries Who Are Changing Our World,” Zirin is a frequent guest on ESPN, MSNBC, and Democracy Now! He also hosts The Nation’s Edge of Sports podcast.