London Mayor Sadiq Khan, in a Tuesday opinion piece for The Guardian, called out President Trump for boosting “divisive, far-right politics” worldwide in recent years. “We must unite to take on the reactionary populists and nativists who are exploiting economic concerns, the atomisation of modern life and a growing distrust of political and media institutions – something we have seen in countries across Europe and, of course, in the US,” Khan said in his Guardian piece. “President Donald Trump and his coterie have perhaps done the most to fan the flames of divisive, far-right politics around the world in recent...