Who were the philo-semitic white supremacists in 1948?
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Certainly their most important wings: the Democratic Party as personified by Harry S. Truman, the Labour government of Clement Attlee, etc.
As for whether there were equivalents of Geert Wilders, Heinz-Christian Strache, and the English Defense League, I honestly don't know. They may be cases, as so frequently occurs, of the political fringes following the lead of the power centers.
-- "Hige sceal þe heardra, heorte þe cenre, mod sceal þe mare, þe ure mægen lytlað."