It was in the 7th century of the Christian Era many of the events which shaped the course of Islamic sectarianism occurred. The major one you are aware of is the Shia-Sunni split; the reality of the origins of this schism and the way in which in manifests today is more complex than the cartoon cut-out you are normally presented, but I want to focus on a group which is outside of the Shia-Sunni dichotomy, the Ibadi. The Ibadi are descended from one of the assorted Kharijite sects. The Kharijites were extremists in the early history of Islam, they rejected Ali because he offered to parlay with the opposition. Though analogies are fraught with misrepresentations, the Kharijites are somewhat like the radical Protestants of the early Reformation era; they rejected the the vast majority of Muslims as infidels and refused to compromise with the world. Here is the Wikipedia characterization of Kharijites: Read the rest of this post... | Read the comments on this post...