The defeat of George Armstrong Custer and the Seventh Cavalry at the Battle of the Little Bighorn was big news in 1876. Newspaper coverage of the battle initiated hot debates about whether the U.S. government should change its policy toward American Indians and who was to blame for the army's loss-the latter, an argument that ignites passion to this day. In Shooting Arrows and Slinging Mud, James E. Mueller draws on exhaustive research of period...