First, the muslim fanatics will destroy what’s left of the Roman ruins in their countries. ( They don’t like to be reminded of how backward they once were.) Then the muslim fanatics in Egypt will start smashing the ancient Egyptian monuments (the Pyramids, tombs, obelisks, etc.) The only history allowed to exist will be Arab/Islamic. And I’m sure they’d like to start destroying monuments in Europe next.
They don’t like to be reminded of how backward they still are.