There’s an old saying about describing someone who is less than smart, “The lights are on, but nobody’s home.”The pictures of a darkened White House during last weekend’s protests outside its gilded and guarded gates recalled that maxim, because on or off, metaphorically, nobody has been home in the White House during the last three and half years, and as a result it has decayed and this week became defaced.The White House, home to Abraham Lincoln, Theodore and Franklin Roosevelt, John F.