Next month’s German federal election on 23 February revolves around the disputed meaning of a single toxic word: ‘remigration’. Until the current fiercely fought campaign began, the word was an unmentionable taboo in German politics for obvious historical reasons, since, according to left-wing linguists, it suggested comparison between the deadly forced deportation of Jews by the Nazis during the Holocaust with the way that unwelcome immigrants are treated in today’s Germany.