Judeo-Masonic conspiracy theory

The Judeo-Masonic conspiracy is an antisemitic and anti-Masonic conspiracy theory involving an alleged secret coalition of Jews and Freemasons. Antisemitism blended after the French Revolution with anti-philosophe, anti-Masonic and anti-Illuminati conspiracy theories, particularly upon the dissemination of the Simonini letter by Augustin Barruel in 1806 and so the idea of the influence of Masons under Jewish domination found fertile ground among diverse European authors throughout the 19th century.

Source: Wikipedia — Judeo-Masonic conspiracy theory (CC BY-SA 4.0)