Where police officers killed a fleeing hostage during a hostage situation because they spotted him holding a gun, no precedent put them on notice that they violated a clearly established right and so they were entitled to qualified immunity.The 7th U.S. Circuit Court of Appeals affirmed a decision by Chief U.S. District Judge William C. Griesbach, Eastern District of Wisconsin.On the morning of Dec. 5, 2015, Brian Flatoff …