There is a good reason that liberals focus extra attention on minorities, since they are the most likely to be disenfranchised. But the only way in a democracy to assist them meaningfully – and not just make empty gestures of recognition and “celebration” – is to win elections and exercise power in the long run, at every level of government. And the only way to accomplish that is to have a message that appeals to as many people as possible and pulls them together. Identity liberalism does the opposite and just reinforces the alt-right’s picture of politics as a war of competing identity groups.

Identity politics on the left was at first about large classes of people – African Americans, women, gays – seeking to redress major historical wrongs by mobilising and then working through our political institutions to secure their rights. By the 1980s, it had given way to a pseudo-politics of self-regard and increasingly narrow, exclusionary self-definition that is now cultivated in our colleges and universities.

The main result has been to turn young people back on to themselves, rather than turning them outward towards the wider world they share with others. It has left them unprepared to think about the common good in non-identity terms and what must be done practically to secure it – especially the hard and unglamorous task of persuading people very different from themselves to join a common effort. Every advance of liberal identity consciousness has marked a retreat of effective liberal political consciousness.