By bizarre coincidence, albeit one not entirely denuded of all logic, President Trump dubbed Friday 4 April ‘Liberation Day’, because it was then that he launched his first major salvo of increased customs tariffs across the world, but the expression would start to take on new justification the following day, in other forms and with very different objectives. For on Saturday 5 April, human tidal waves crashed onto the streets of the most major American cities, expressing a ‘liberation...