[DemolitionRed]

Imagine sitting a Muslim down and explaining that a Catholic is a Christian but doesn't have the same beliefs as the Church of England and although a Spiritualist is still a Christian, they are mocked and ridiculed by other sects of Christianity. They are all Christians but they all disagree with one another.

What many Sunni Muslims support about ISIS is their "Orthodoxy." Wahhabism is the religion of Saudi Arabia, though not all Saudis are Wahhabi. Saudi Arabia is seen by the Sunnis as the purest Muslim Orthodox state and although many different sects of Muslims go on a pilgrimage to Mecca, the Saudi's merely tolerate them but they don't like them, they don't believe in them and they won't celebrate Hajj with them.

Millions of Muslims who follow Islamic doctrines will not support ISIS unless they convert to Wahhabism but that would be like a Catholic converting to the Spiritual church or a Quaker converting to priesthood, it can happen but its not common.

Fortunately most Sunni have no interest in converting to the Wahhabi doctrine, though some will. Sunni are generally not orthodox in their beliefs and have happily moved into modern times without their religion hindering them. Just as most Catholics now believe contraception is a good idea, some will remain glued to the scriptures saying its evil.