Actually, fundamentalists tend to be extreme in one fashion or another. Southern Baptists Fundamentalist Christians, for example, prosletyze about the literal exactness of the Bible. Pointing things out to them about the fact they do not follow the ancient laws from numbers and deuteronomy seldom stops them. They have taken an idea, added some concrete, and called it good. Evangelism may or may not be their thing. Some Evangelists I know are Atheists, however, I don't think this makes them Fundamentalist atheists.