Orthodox jews feared Christans, there debatablely responsible for the death of Jesus. Sure romans killed jesus but they did it because the local jewish magistrates feared him and passed judgment. The romans themselves were divided on Christans, some regarded them as a fringe cult, some an oddity and to fewer a new religion. that was the start of a history of conflict between the Abrahamic religions that arguably continues to this day. Most recently the creation of isreal ment the forced annexation of many Muslims and has been a point of contention since but thats a whole other story in it of itself. Just saying there is no such thing as a peaceful religion only peaceful people.