Guns, gangs and violence. Not the usual picture when you think of a small northern Minnesota town. But residents in Cass Lake on the Leech Lake Reservation say they're under siege. As MPR's Tom Robertson reports, the area is also struggling with high unemployment, poverty, and longstanding racial divisions between the Leech Lake tribal government and city officials. BACKANNOUNCE: Tomorrow, Minnesota Public Radio's Amy Radil tells us how a recent State Supreme Court decision is resulting in some changes for law enforcement on the state's reservations.