Vice President Kamala Harris will be the keynote speaker at the annual King Day at the Dome festivities, the NAACP South CarolinaState Conference told The State Tuesday. Harris’ visit on MLK Day, which falls on Jan. 15, will come nine days after she visits Myrtle Beach to deliver the keynote remarks at the 7th Episcopal District AME Church Women’s Missionary Society annual retreat. The King Day at the Dome appearance will be Harris’ eighth visit to South Carolina since becoming vice president, and comes as Democrats will kick off their presidential primary nominating process with the Palmetto …