It's a real stretch to use "dominant social status" to refer to what they have been losing and fear losing. This suggests a misunderstanding. They don't want to

It's a real stretch to use "dominant social status" to refer to what they have been losing and fear losing. This suggests a misunderstanding. They don't want to be poor, dependent, useless, unsafe, or hated. The lack of that is a far cry from "dominant social status". When you hear a person talk about something normal, it is reassuring. When you can't understand a word they say, it is threatening. They could be doing something hostile. You might say that logically this doesn't make sense, but that doesn't change the reality. Other languages are exclusionary. Some of these cultures come with extremely unenlightened views about anybody who isn't a straight male. It's dishonest to deny this. Your "nice simple little solution - more taxes, more redistribution" isn't a solution even for poverty. Even in those cases when people are poor, the Brexit/Trump people don't want your handouts. They want to be useful, supporting themselves as independently as possible. They want to earn and own. They want cars and detached houses, without any sort of lease, and often they want to do their own repairs. These people don't want to be treated like children, pets, or livestock. They want to be fully in control of their own household, without government interference. Without the need to beg for government help, they want to be able to defend against intruders. An interesting thing about the cultural war is that the Brexit/Trump people, especially the Trump people, have nowhere else to go. If they lose, their culture is wiped from the Earth. The other side can find their culture all over the world. If they lose, they can head to a typical large city elsewhere in the world.