Thanks to Rob Janes for this rather depressing bit of information:
http://tinyurl.com/ba3w2

Police: Miss. Man Kills Sister Over Bag Of Ice
HATTIESBURG, Miss. -- Police in Hattiesburg, Miss., said a man fatally shot his sister in the head over a bag of ice.Authorities say 35-year-old Antonio Page shot his sister with a handgun on a street corner Tuesday night.Police Chief David Wynn said the woman's name was not available.Wynn said tempers are short, but he can't understand why a member of someone's family could take that step.The shooting is being treated like a homicide, Wynn said.