If you have an hour to spare, check out this fascinating NPR podcast. It's Sudhir Venkatesh reading from and discussing his book "Gang Leader for a Day." Venkatesh is a sociologist who for his dissertation studied the relationship between the Chicago crack-gang Black Kings and the Robert Taylor housing projects where they operated. If you've read "Freakonomics", you'll recognize Venkatesh from the why drug dealers live with their mothers chapter.
