Across the United States, historians are worried. Indeed, many of us are filled with a deepening sense of dread about the direction in which our country is headed. And with good reason. Because while historians can’t predict the future, we also can’t help but see in current events certain patterns, continuities and examples from the past that suggest how it all might play out. Many of us see President Trump and his rightwing allies steering this country towards an authoritarianism that will end American democracy as we know it. It’s on account of these dark visions of the near future that nearly every historian I know says they have not slept well in ages.