Social scientist Francis Fukuyama (from left), presidential adviser Michael Anton and former Ireland President Mary Robinson are some of the people NPR has interviewed in an exploration of how we got to this point in history and where we're headed. Larry Downing/Reuters; Ariel Zambelich/NPR; Jason DeCrow/AP hide caption

Mollie Burkhart (second from right) lost all three of her sisters under suspicious circumstances. Rita Smith (left) died in an explosion, Anna Brown (second from left) was shot in the head and Minnie Smith (right) died of what doctors referred to as a "peculiar wasting illness." The Osage National Museum/Courtesy of Doubleday hide caption

Nathaniel Martello-White, Freida Pinto and Babou Ceesay star in John Ridley's new series Guerilla. The show explores the way humiliation and marginalization can lead to violence. Sky UK Limited/SHOWTIME hide caption

Ray Davies' new album, Americana, is based on his 2013 memoir of the same name. Courtesy of the artist hide caption

Larry Mullen Jr, Adam Clayton, The Edge and Bono will take U2's The Joshua Tree on the road this summer for the album's 30th anniversary. Courtesy of the artist hide caption

Johnstown, Pa., nestled in the Allegheny mountains, has more registered Democrats than Republicans, but has voted Republican in the last two presidential elections. Acacia Squires/NPR hide caption