Overlooked Americans: Scenes from the country’s back row

After nearly 20 years on Wall Street, Chris Arnade left his high-paying career to document Americans living on the margins. Traveling all over the country, he took photographs and wrote about the America that is overlooked. Christopher Booker recently spoke to Arnade about his new book "Dignity: Seeking Respect in Back Row America," in which he documents people living in poverty and addiction.