Only 20% take their religion seriously.  We make this same excuse for feminists; a minority are "radicals", the rest are "normal", but when you consider the principles of each, of just how insane it is to believe in an imaginary deity and devil, it's easy to see that fanaticism is a prerequisite to being a part of said groups; those who lack this fanaticism either avoid the religion, or if they were raised with it, leave it when safe.  We shouldn't condemn those who actually try to adhere to the religion in question, as this minimizes the role that the other "normal" followers play in supporting those who take it seriously; we should view the group as a cohesive whole, an ecosystem of fanatics who help the minority of people doing as the group wills, and condemn them all for their role in wrongdoings, both religions and governments (alas, I repeat myself.)