Brexit didn't work because it didn't fundamentally address the root cause of British working class poverty.
Instead the Brexit propaganda was that it was the influx of cheap labour from Eastern Europe & elsewhere that was impoverishing the working class. This accounted for the British style of Political Populism aided and abetted by middle class Conservatives who saw EU rules & regulations gazumping Westminister thereby stimyiing cronyism and political pork barrelling.. the stuff of traditional politics.
Of course Brexit wasn't the answer; instead it did not address the immigrant problem and poverty/relative poverty/growing wealth gap.
So now in classic RW working class style (like the 1930's scapegoating of Jews) the Pommy working class is now scapegoating immigrants and specifically Muslims rather than blame the economic system which benefits a few and impoverishes the majority.
Of course Hitler temporarily solved that by instituting National Socialism which was a bit of a misnomer...instead it should have been called State Capitalism under the dictatorship of the Nazis.
Working class woes started with Thatcherism,-Neo-Liberalism on steroids- which gutted Trade Unions, privatised SOEs, taxed the poor# and gave the rich tax concessions.
So in summary, IMO, these street riots are misguided in that they are hanging the tail on the wrong donkey but I guess that's RW Populism for you in the sense that any scapegoat will do!
#VAT was introduced in 1973 @ 10% & its now 20% This unfairly penalises the poor. But are the RW working class populists rioting on the streets about it while multinationals such as Google etc pay bugger all tax?