From left, a woman who goes by the name of "Queen," views crosses put up in memory of the victims of Saturday's shooting as artist Roberto Marquez, of Dallas, paints and Will Walsh, of Nocatee, Florida, helps construct posts, Aug. 28, 2023, near the site of the attack at a Dollar General store in Jacksonville, Florida. (Corey Perrine/The Florida Times-Union) Sixty years after the Rev. Martin Luther King Jr.’s historic March on Washington, much of his dream is still just a dream. I’d like to offer a more cheerful message, but that’s hard today, even for a resilient self-described optimist...