A three-story mural of historic photos debuted this month in Atlantic City. The shots include one of a young Muhammad Ali, and another of Martin Luther King Jr. in a linen shirt and shorts at nearby Chicken Bone Beach. A third is of Fannie Lou Hamer, who rocketed to national attention during the 1964 Democratic National Convention, held in Atlantic City. She’s known for leading the Mississippi Freedom Party’s efforts to highlight virulent racism in the South that was costing Black people their lives. All of the photos were from Atlantic City in the 1960s. This mural and another were completed …