Presuming to speak for that civilization, Trump said, “We write symphonies. We pursue innovation. We celebrate our ancient heroes . . .” The Internet cried with one voice: “We write what?” Like many of Trump’s utterances, the line was at once ludicrous and sinister. His veneration for orchestral music came as a surprise to almost everyone, and the implication that some cultures are incapable of creating symphonies stirred bad memories.