Aug 26 (Reuters) - A white man armed with a high-powered rifle and a handgun killed three Black people at a Dollar General store in Jacksonville, Florida, on Saturday, before shooting himself, in what local law enforcement described as a racially motivated crime. "This shooting was racially motivated, and he hated Black people," Jacksonville Sheriff T.K. Waters told a press conference. The suspect, whom Waters described as a white male wearing a tactical vest, was not identified. Waters said all three victims - two men and a woman - were Black. Waters said authorities believed the shooter acted alone, and...