It's been called White Panic. White birthrates are at historic lows so in many Western countries whites are slowly-but-surely losing their majorities. A lot of Whites are very upset about this (personally it doesn't bother me). Nobody can think of a solution that isn't overtly racist or illegal under their own country's constitution, so they are lining up behind right-wing extremists, neo-Nazis, white supremacists, etc. Even though, at some level, they must realized that there's no way they can win, no way they can keep their country lily-white.