The Oppermanns immerses us in these oppositions, and in our own contradictions, and reminds us, every time we leave the page to check our phones, that just reading a novel about the German 1930s—a novel about pervasive surveillance and militarized policing, and about how the fake-news threats of “migrants” and “terrorism” can be manipulated to curtail civil liberties and crush democratic norms—will never be enough to prevent any of that from ever happening again.

