“It’s supposed to be white with white. Black with black. Man with woman and all of that,” Jessica Black of Craigsville, Virginia, explained to her local TV station. A reporter had asked her why she would let her seven-year-old son dress as a KKK member for Halloween — and her answer was, in part, that it’s a valued family tradition. Nothing wrong with the Ku Klux Klan, Ms. Black emphasized.