"Everybody potentially is a killer, but some of us are potentially more than others." — Jim Fallon
Violence and brutality are grim realities of life. So why are some people violent, and others aren't? Are some of us born that way, or can anyone be pushed into committing acts of cruelty? What would it take for an ordinary person to become violent? In this hour, TED speakers explore the sinister side of human nature, and whether we're all capable of violence.