Christians imagined Muslims as Jewish co-conspirators in killing Christ

Evidence

The Christian net for the capture of Jews and other agents of Satan was spread wide to draw within it Saracens as well, for were they not also obviously in league with and abetted by the Jews? Moslem incursions at various times were, in fact, construed as forms of Jewish sabotage. All of this is but part of a larger phenomenon, or fantasy, in which the Saracens themselves were identified as demons, as Antichrist (so we have seen), but, more to the point, were believed to be in league with the Jews, even thought, for example, to have assisted them in the Crucifixion. — Sophia Rose Arjana, Muslims in the Western Imagination, 97

Categorization

• SEED: Essay angle: the fantasy of a global Jewish-Muslim conspiracy long predates modern geopolitics — the Crusade-era telescoping of two ‘infidels’ into one Satanic league is the deep root of later conspiracy thinking.