Do you honestly think the only people in Britain who really care about Brexit are white nationalists? Because if you do, you're even denser than I thought.
You have to see things in context. Phone hacking, expenses scandals, economic crisis, austerity, the Lib Dems promising free education and then doing the opposite. Now on top of all that the political class have held a referendum, told everyone it mattered and want to find a way to forget it happened. Not every one who is angry about that is a white supremacist?