In 2014, Francis Fukuyama wrote that American and global institutions were in a state of decay, as the state was captured by powerful interest groups. Two years later, his predictions were borne out by the rise to power of a series of political outsiders whose economic nationalism and authoritarian tendencies threatens to destabilise the entire international order. These populist nationalists seek direct charismatic connection to 'the people', who are usually defined in narrow identity terms that offer an irresistible call to an in-group and exclude large parts of the population as a whole. The demands of identity direct much of what is going on in world politics today. The universal recognition on which liberal democracy is based has been increasingly challenged by restrictive forms of recognition based on nation, religion, sect, race, ethnicity, or gender, which have resulted in anti-immigrant populism, the upsurge of politicised Islam, the fractious environment of many college campuses, and the hideous emergence of white nationalism. Identity is an urgent and necessary book: a sharp warning that unless we forge a universal understanding of human dignity, we will doom ourselves to continual conflict.