José Mujica was president of Uruguay from 2010 to 2015 and presided over a period of progressive governance that matched his want-for-nothing lifestyle. He forsook the presidential palace in favor of his farm where he grew flowers. His life’s arc from young guerrilla fighter to eventual president was not straightforward. Pablo Brum, author of “The Robin Hood Guerrillas: The Epic Journey of Uruguay’s Tupamaros,” explains Mujica’s life to host Marco Werman.