For people in the camps, the economic boom has had the perverse effect of further undermining their already precarious existence. With land at a premium, the local government of Khartoum state periodically sends police and bulldozers into the camps to plow under swaths of mud houses, pushing people even farther out into the desert, and then sells the cleared land to developers."This government has a different feeling towards the southerners," Yobu said. "They look at the south as inferior and themselves as superior. If we separate, we'll have more revenue, and more freedom also. The south has oil, and gold. But right now, the money is in their hands."