It's not just Trump, populist nationalists are gaining power across the world
In 1935, the American novelist Sinclair Lewis published a political novel entitled It Couldn't Happen Here. America was the leading force establishing the post-war democratic world order and, imperfectly, creating a "great society" and establishing civil rights. Now, in defiance of multiple criminal indictments, Donald Trump is the favourite to be re-elected president of the US next year.