THis is the part where surveyor says he knows more than anyone else about Islam and his knowledge predicted this.

This is akin to the people who read Germania by Tacitus and claim it predicts Hitler.

Truly dumb.

There are nominally Christian preacher who espouse violence and there is violence committed in the name of Christ.
The difference he cites is one of the interpretation of jurisprudence in the name of the lord.

The humor is the part about how the caliphates were so anti-Jewish. Remember he knows more than all those liberal historians.

I spent several weeks this summer roaming around Muslim castles in the old caliphate of Al-Andalus.
Its remarkable to see so many stars of David among Quranic verses.

Note: Sevilla (the last Iberian Muslim stronghold) was finally ceded to the Christians when the Christians swore a blood oath to the Muslim king that they would be tolerant of the Jews.

The inquisitions made the Moors uncomfortable about ceding their subjects over to genocidal conquerors.

Unsurprisingly, the Christians did not keep their word.