I think after an economic crash, you often get demagogues. The ones on the right tend towards white nationalism, and scapegoat minorities, such as Jews and Muslims. They are usually misogynistic, and offer half-baked economic solutions, which don't add up.
On the bright side, Farage is not a fascist. I think the economy is too robust for that, but if there was another crash or a long depression, he would probably be replaced by the real thing. Let's hope the 30s are not being repeated.