At a historic cemetery in the South, a Dia de los Muertos festival takes root toggle caption Aaron Sanchez-Guerra/NPR RALEIGH, N.C. — The earthy smoke of Mexican copal incense wafts around the entrance of the Historic Oakwood Cemetery in Raleigh. “It’s like cleaning your house before the guests arrive,” says Marín, a Mexican-American artist who now calls North Carolina home, …