Your editorial (The Guardian view on the BBC under siege: Britain must defend its own truth, 10 November) argues that the row over the editing of Donald Trump’s speech for Panorama is a sideshow and that the real fight is over what impartiality means – and who gets to decide.
A disappointing feature of that fight is that both accusations and denials of bias are typically uncorroborated assertions: subjective judgments with little reference to any of the extensive research into broadcast bias conducted by both academics and broadcasting organisations.
