“It Can’t Happen Here” is a work of dystopian fantasy, one man’s effort in the 1930s to imagine what it might look like if fascism came to America. At the time, the obvious specter was Adolf Hitler, whose rise to power in Germany provoked fears that men like the Louisiana senator Huey Long or the radio priest Charles Coughlin might accomplish a similar feat in the United States. Today, Lewis’s novel is making a comeback as an analogy for the Age of Trump. Within a week of the 2016 election, the book was reportedly sold out on Amazon.com.

At a moment when instability seems to be the only constant in American politics, “It Can’t Happen Here” offers an alluring (if terrifying) certainty: It can happen here, and what comes next will be even ghastlier than you expect.