There's a revolution underway in South America, but most of the world doesn't know it. In South of the Border, Oliver Stone sets out on a road trip across five countries to explore the social and political movements as well as the mainstream media's misperception of South America while interviewing seven of its elected presidents. In casual conversations with Presidents Hugo Chávez (Venezuela), Evo Morales (Bolivia), Lula da Silva (Brazil), Cristina...