A decisive moment in the career of Sir Oswald Mosley, leader of the British Union of Fascists in the 1930s, is supposed to have been a rally at Olympia on 7 June 1934, where violent scuffles broke out as hecklers were brutally removed by his ‘Blackshirted’ henchmen; resulting in bad publicity not so much for the anti-fascists as for Mosley himself. Mosley was adjudged to have provoked it. Popular support for the BUF, despite the backing of the Daily Mail (of course) – ‘Hurrah for the Blackshirts!’ – went downhill after that. This is eerily reminiscent of recent events in Chicago and Cincinnati, though it’s doubtful whether the outcome for Trump will be the same. Present-day America may be less shocked by violence than 1930s Britain was. Anyway, isn’t it already too late?