There are systemic issues that no main stream political project seems capable of addressing, it's pointless to simply remove some trade barriers again to paper things over, and then pat ourselves on the back and pretend they are being solved.
Brexit has exposed some of those issues, and made it clear where the responsibility lies. by exposing them and focusing attention on them it has created a real opportunity to address them, although I imagine that opportunity will be missed.
I’m gonna go with nationalists who don’t want foreigners moving to the uk to take our jobs.
Globalization, technology, loose monetary policy all affect different socioeconomic strata differently.
I think the fundamental issue is that not everyone in society is making the same progress.