This year’s defeat of populist-nationalist parties in elections in France and Holland, and their apparent political setbacks elsewhere, has been hailed as evidence that the recent surge of far right movements has ended. But the things that fuelled it – terrorism, refugee migration, working class anxieties – haven’t gone away. And in Donald Trump’s America, many countries in Europe, and even parts of Canada, populist-nationalism remains a potent and growing political force, especially among young people. It would be a mistake to dismiss it, writes Patrick Speck.