Very true, @koolkatxx , but I'm afraid the racist far right have a history of this that goes back for over 50 years.
This is from 1973. Mostly Union flags, but there are a few St Georges in the background on the r/h side.
I'm ancient, and I was involved in counter protests back then. For many years, I lived within a mile of a property that had been owned by one of the NFs founders, and was used as a "nationalist bookshop" selling all sorts of fascist propaganda and, guess what, the outside was painted with a massive union flag. (It later turned out to be used as a "safe house" for far-right Italian fascists who were wanted for terrorist offences in Italy.)
There was a racist murder a mile further up the road, where a group of far-right skinheads pulled a young black teen off his moped and stabbed him to death. A little further away, a group of football "fans" violently assaulted an Asian couple and left one of them with life-changing injuries. We avoided going shopping on days when there were home games unless we went very early, because it wasn't safe.
For my generation, what is happening now is reminiscent of those times, and we don't want to go back there.
ETA: sorry the image I pasted seems to have disappeared, and I can't find where I got it from now, but anyone who cares to google images of the National Front in the 1970s will find numerous similar ones.