A pair of 17-year-old Somalis from Minneapolis were charged this afternoon with first-degree murder in the killings of three people last week at a south Minneapolis market in what Hennepin County's top prosecutor called "a robbery gone bad." Ahmed Shire Ali and Mahdi Hassan Ali were accused in a criminal complaint of killing two store employees and a customer who walked in just as the robbery got underway. He was immediately shot. "It's a tragic, senseless shooting," said County Attorney Mike Freeman, in announcing three counts of first-degree murder against each defendant. "It's a robbery gone bad." The two suspects...