415 AD Enraged over a point of doctrine about the true nature of Christ, Cyril , Christian patriarch of Alexandria, incites a pogrom against people who deny his own theory. Cyril's co-religionists assert their faith by burning the homes of doctrinal opponents and driving entire communities from the city. A mob gathers, chanting slogans against her. The rioters close in, jamming Hypatia's chariot to a stop, grabbing her, jerking her down and out into the street where eager hands strip the young woman naked. Jeering they drag her to a church where officials promptly butcher her.
History is written by the winners.
You've never heard about the Pagan origins of Christianity because as Christians institutionalized the Church starting in the 300s AD, their reaction to Pagan competition was to deny and suppress Pagan teaching. To burn Pagan writings. To drive dissident communities into the desert. To murder Pagan scholars. It worked well.