American Gun BY ROGER EBERT / April 7, 2006 "American Gun" tells three stories that are small, even quiet. The stories are not strident but sad, and one of them is open-ended. They are about people who find that guns in the hands of others have made their own lives almost impossible to live. The first story involves a mother named Janet, played by Marcia Gay Harden, whose son shot and killed other students at his Oregon high school three years ago, and then was shot dead. She carries on with her remaining son, David (Chris Marquette), who attends a...