My older son is a film major; and last night we sat down—him, his younger brother, and me—to watch Children of Men. Directed by Alfonso Cuarón and released in 2006, it didn’t make much of a splash at the box office. But, over time, it’s become something of a cult classic—for good reason. It’s one of those rare films that feels more relevant the further we get from its release. What looked like bleak science fiction then, feels, today, like a realistic if not inevitable outcome.