The Supreme Court has ruled in favor of a police officer who shot a woman outside of her home in Tucson, Arizona in May 2010. The officer, Andrew Kisela, shot Amy Hughes after she was seen acting "erratically," hacking at a tree with a knife and arguing with her roommate.Kisela and another police officer, Alex Garcia, heard about the report on their patrol car radio and responded. A third police officer, Lindsay Kunz, arrived on the scene on her bicycle. All three officers drew their guns. At least twice they told Hughes to drop the knife. Viewing the record in...