Here’s a yellow flag, waved in a friendly spirit, in respect of Britain’s new foreign minister, David Lammy. He seems like a fine fellow. The Atlantic’s famed foreign correspondent, Anne Applebaum, who spoke with him on the hustings, notes that he says he will be “the first foreign secretary descended from the slave trade.” Bravo. She also reports that Mr. Lammy told her that he wants to, as Ms. Applebaum puts it, “revive the legacy of Ernest Bevin.”