Finished Catherine Nixey's excellent "The Darkening Age", about Christianity's violent role during the slow decline of the Roman Empire.
The Christianity of late antiquity was obsessed with demons and with sexual purity, no less fanatical than ISIS or the Taliban. Zealots burned books, smashed statues and temples, murdered non-Christians. Their targets were, in some cases, the exact same statues ISIS would obliterate so many centuries later.
Full review:
https://lib.reviews/review/6059bf20-981e-4bc5-9d06-b43877b01057