The US Constitution and a 69 year-old work on the roots of Nazism and communism, The Origins of Totalitarianism,by Hannah Arendt, were both beneficiaries of a spurt in sales prompted by fear of our president, a so-called “Trump Bumpâ€. Many more Americans are reading up on their rights and trying to understand the dark forces that motivate Trump and his followers. In addition to these two unlikely bestsellers, the Trump Presidency has also generated demand for classic novels describing future politically induced dystopias like 1984, It Can’t Happen Here and the Handmaiden’s Tale. Lately, such novels seem less like speculative fiction than warnings.