The backlash against the alt-right has ignited debates about free speech. But not all right-wing thought constitutes hate speech, and we need to identify the dividing line.
Our society is now intolerant of those who are intolerant of others; they can be legally penalised. But is that in itself a failure of tolerance?
Those calling it slavery fan fiction are ignoring the long, nuanced tradition of articles and films that wonder what would have happened if the South had won.
It's not just the US which is seeing a rise in support for neo-Nazi organisations and right-wing politics. In Scandinavia it's infiltrating the mainstream.
Barack Obama may have chosen Mandela's words for his tweet precisely because they offered some distance from the political space in the US.