Golem
"Golem" in the context of Fascism refers to a person controlled by jews, inspired by jewish folklore of giving life to inanimate objects so that they may serve the jew.
History
Some of the oldest stories pertaining to the golem date to early Judaism where the Biblical Adam was created as a golem, however the most well-known depiction of the golem comes from the narrative of the Golem of Prague. In it, a jew Judah Loew ben Bezazel, a rabbi of Prague in the late 16th century "created a golem out of clay from the banks of the Vltava River and brought it to life through rituals and Hebrew incantations to defend the Prague ghetto from antisemitic attacks and pogroms".
Contemporary use by Fascists
In its modern use, rather than referring to an inanimate object given life through jewish rituals, it refers to a Goy that serves the jew of his own free will, thus it is used as an insult.