The myth of an innocent person turning to evil because a demon has taken possession of the body is common. But it has especially deep roots in Jewish legend.
It’s a pretty familiar theme — the Jew as a perpetual wanderer, forever a foreigner, friendless and reviled by all. Is there anyone else so existentially homeless, utterly without place on the planet as the Jew? Who, besides the Jew, is so intolerable to his host that he becomes the target of violent threats, which necessarily culminate in expulsion and annihilation?