One year ago, President Trump conducted a hostile takeover of the Kennedy Center, the venerable Washington, D.C., performing-arts institution. The president said he had never attended a show there , but he was confident that he alone knew what the center needed. Last night, Trump delivered an implicit admission of defeat, announcing that the center will close on July 4 for two years. Trump brought the same theory to the Kennedy Center that he does to most of his moves: He believes that he knows