There weren’t many comical moments at the pro-Palestinian march in central London at the weekend, but listening to protesters arguing over dental hygiene was one. There have been weekly marches in many British cities since the war between Israel and Hamas started last month. Last Saturday’s in Westminster was the biggest yet. Police say there were 70,000 pro-Palestinian demonstrators while organisers insisted there were more than 350,000. Regardless, there was at least one yellow-toothed English fascist. The crowd marched up and down both sides of the River Thames before proceeding down the commercial thoroughfare of Strand, through Whitehall and into...