When Isaac Farris, nephew of the Rev. Martin Luther King Jr., announced plans in late December to sell the King Center to the National Park Service, it seemed the King heirs had finally embraced reality: They don't have the resources — or the inclination, it seems — to maintain the center properly. And, since the property is a monument to King's legacy, it ought to belong to the public anyway. But that burst of reasonableness from the King family was short-lived. Last week, two King siblings — Martin L. King III and his sister, Bernice — announced that they would...