Related to the previous post: I think the main danger of division in the church is not gay rights, or pacifism, or socialism, the role of women, or any of the common topics of the day. It is the casual meanness of Nice People in discussing these issues. They are insulting and self-righteous and do not see it. The simple exercise of reading back to oneself how these same words would sound coming back does not even occur to them.
How could it? They are well-defended. They think of themselves as kindly people, and comfort themselves with images of the worst examples of their opponents. They aren't mean like them. They aren't haters like those awful people who call themselves Christians.
The folks at Westboro Baptist are mean, the health and wealth Positive Jesus people are condescending, but they are of no real danger in the long run. It's the Nice People, who have no awareness that they are one and the same who will someday make the church indistinguishable from "the popular opinions of the best people."