They look for all the world like internment camps. The long rows of identical white trailers sit on flat, grim, barren expanses of land that are enclosed by metal fences. Armed guards are stationed at the entrances around the clock. More than a year after the catastrophe of Hurricane Katrina, thousands of the poorest victims from New Orleans are still living in these trailer parks run by the Federal Emergency Management Agency. They have ironic names, like Mount Olive Gardens and Renaissance Village. A more accurate name would be Camp Depression, after the state of mind of most of the...