McCarthyism and antisemitism
The role of antisemitism during McCarthyism (also known as the Second Red Scare) has been noted and debated since the 1940s. In particular, the role of antisemitism during the trial of Julius and Ethel Rosenberg has been debated both inside and outside of the Jewish community.
Source: Wikipedia — McCarthyism and antisemitism (CC BY-SA 4.0)