I would like to nominate Diego de Landa, burner of the Mayan books. And a lot of Mayan people. The Mayans had books, like normal paper booms filled with Mayan writing. Histories, religion, presumably everything a society would write down. There are only four Mayan books left now. It's all gone. It's a tragedy that particularly boils my blood and I'm making him the final boss of a Mesoamerican-themed Pathfinder campaign I'm about to run, because I want to live out a fantasy where he gets fireballed to death or something.