Well before the march started, thousands of people flowed over Blackfriars bridge, or came up from Waterloo station, flags everywhere, hailing from everywhere - from Yorkshire roses to the diamond of the Isle of Wight. What exactly it was that "United the Kingdom" was left vague, for people to cheer their own particular cause. This was billed as a free speech rally and the most common chants we heard were "Keir Starmer's a *******", "oh Tommy Tommy" and "we want our country back". That means different things to different people. Dawn, up from Southampton and wearing a red sequined jacket,...