[Caged Great]

Yes, it doesn't matter if you're talking Iran, England, or the USA. Low information voters tend to be very protectionist of their cultural identity regardless of what background the individual group is. They will even vote against their own interest to protect that identity.

In this case it was British nationalism. With Trump supporters, it's White nationalism, and in Iran it's the stricter definitions of Islam that has kept the Ayatollah in charge all these decades. It's all different flavours of the same thing.