This afternoon, across Britain, the most pro-establishment demo of modern times will take place. Sure, the Stop Trump protesters gathering outside Parliament and elsewhere will look and sound rad. They’ll chant and rage and blow whistles and hold up placards with Trump done up like a tangerine Hitler. But don’t be fooled. These people are the militant wing of the old establishment. They’re radicals for the old status quo, pining for the pre-Brexit, pre-Trump era when their kind ruled and ordinary people knew their place.