The United States is the only country in the world that routinely sentences juveniles to life in prison. Kenneth Young was 15 when he received four consecutive life sentences for a series of armed robberies. He has spent more than a decade behind bars, a U.S. Supreme Court decision could set him free. Director Nadine Pequeneza talks about Young’s case, the subject of her documentary “15 to Life: Kenneth’s Story.” She’s joined by Mishi Faruqee, juvenile justice policy strategist at the ACLU. The documentary airs August 4 on PBS.