Johann Andreas Eisenmenger - POSED AS A RIGHTEOUS JEWISH CONVERT, THEN WROTE AN ANTISEMITIC CREED

— “Eisenmenger belonged to the class of insects which sucks poison even out of flowers,” the 19th-century Jewish historian Heinrich Graetz wrote.

In 1700, Johann Andreas Eisenmenger published “Judaism Unmasked,” one of the most noxious and highly influential antisemitic works ever written.

https://en.wikipedia.org/wiki/Johann_Andreas_Eisenmenger