Part of the UK have been very badly hit by globalism - which arguably was one of the major factors in the Brexit vote. Similarly, the support for National Front in France was, as far as I understand it, largely in areas where there have been steep downturns in traditional industries.

Edit: I was a Remain voter - but I can completely why so many people were angry and wanted a protest vote. Just that I don't think the EU really caused many of the problems people were complaining about so that coming out of the EU is unlikely to actually resolve this issues.