Bill Courtney is an American football coach, entrepreneur, author, and the subject of the academy award winning 2011 documentary “Undefeated,” which tells the story of Courtney leading a high school football team in an economically depressed area of Memphis, Tenn. to the playoffs. Courtney is the host of the An Army of Normal Folks podcast, in which he shares stories of “ordinary people doing extraordinary things in and around their communities.” His book “Against the Grain: A Coach's Wisdom on Character, Faith, Family, and Love” was released in 2014. In this episode, we discuss coaching, the surprise success of “Undefeated,” and how talking across lines of difference can heal a polarized America.