Personal Rage, Hostility and Deadly Gunfire

America's latest mass killing took the lives of seven people, including the gunman, who shot up a Sikh house of worship in Oak Creek, Wisconsin. Law enforcement agencies want to know if Wade Michael Page acted alone. We talk with a criminologist who knew him as part of the hate-music scene. Since they first arrived in the US more than 100 years ago, Turban-wearing Sikhs have experienced brutal discrimination. They were the first targets of retaliation in the US after the attacks of September 11. Was this a hate crime or an act of domestic terrorism? How could it happen in a country based on tolerance of religious pluralism?