Maybe Raymond Ibrahim could help clue him in.
Christmas in Iraq: Slaughtered Christians: "As expected, Christmas did not pass the Islamic world without church attacks and slaughtered Christians. Its apparently a tradition there, from the dawn of Islam down to this very Christmas..."
http://www.raymondibrahim.com/muslim-persecution-of-christians/christmas-in-iraq-dead-christians/
Raymond Ibrahim would be excellent. And/or Robert Spencer. I believe they’re both Catholic, too.