The only thing we can say for certain in the immediate aftermath of the referendum is that David Cameron will be remembered as one of the worst prime ministers we’ve ever had: at once ignorant of his own people and reckless with their lives. And yet I don’t entirely blame the Tories for the disaster they’ve set in train, even though the avoidable misery and cultural polarisation we are now seeing only tends to happen under Tory governments. Labour’s last period in office was the biggest missed opportunity since Thatcher’s decision to spend North Sea oil revenue on tax cuts and subsidising council house sales. Between 1997 and 2010, Labour sowed the seeds of the cynicism and anger that have propelled today’s result.