The weaknesses of American democracy, which the Trump presidency has so powerfully exposed, can’t be entirely blamed on the constitution or on political procedure. They are rooted in the defeat of Reconstruction after the Civil War and the enduring power of white supremacy. In recent years, they have been amplified by deindustrialisation, the collapse of organised labour and the rise of social media. The Democratic Party bears a share of the responsibility for this. Since the Clinton administration, it has prioritised free trade and globalisation over jobs and economic equality, becoming a party of college-educated middle-class professionals, and largely turning its back on working-class voters.