Brexit was promoted strongly by populist candidates like Donald Trump who openly advocate racism. The Brexit vote legitimized racist undercurrents just like Trump's election did here. It was an absolute disaster for the British economy. Trump was among the first and few "politicians" to congratulate Britain on the Brexit vote (ironically by showing up at his golf course in Scotland- the country that overwhelmingly voted to remain) because he knew that he would profit from it. Many who voted for Brexit immediately regretted it.