What’s more scary? A gaggle of old UKIP voters gathering to vent their spleen about mass immigration? Or a march of hulking young men, all masked and clad in black, hollering ‘Allahu Akbar’ and ‘Zionist scum off our streets’? At the risk of being branded with that cheap and meaningless slur of ‘Islamophobe’, I’m going to say it’s the latter. Something extraordinary happened in London this weekend — there was a ‘counter-extremist’ protest that felt more extremist than the thing it was countering. Their target was UKIP, around 75 of whose supporters had assembled in Whitehall to agitate for remigration....