Sean Rayford/Getty ImagesThe Florida man who gunned down three Black people before fatally shooting himself at a Dollar General in Jacksonville on Saturday may have initially targeted a different store, authorities said Monday in a press conference that saw them lay out the most detailed timeline of the racially-motivated hate crime yet presented to the public.Ryan Palmeter, 21, was captured on surveillance video pulling into a Family Dollar around 12:23 p.m., Jacksonville Sheriff T.K. Waters to