So Jon Snow has never seen so any white people? In a country that is 90% white? ... maybe he needs to get out of London a bit more? For sure, London is 58% white or at least it was in the 2011 census... so most likely he's use to seeing a diverse range of folks. But the country at large, yeah it's mostly white folks. Was he unaware of this? And yeah, London voted Remain, so most of the pro-Brexit crowd is going to be white folks from outside London. Pretty easy to get a million London folks riled up an a Saturday to protest for Remain. Harder to ship in Brexit voters on a Friday [work day] to protest Brexit.