Via James McGrath, an illustration of the many contradictions of conservative Christianity in American politics:
As James notes, far from being a condemnation of Christianity tout court, it should rather be read as a condemnation of those who are "Christian In Name Only," who self-consciously call themselves Christians while embracing an ideology which bears absolutely no resemblance to any values Christians themselves claim to support. It's what happens when the right wing of the Republican Party and the right wing of the Christian faith become so close to one another that they are indistinguishable.
As James notes:
If you fear others, hate others, judge others, and fail to hold yourself to a high standard of love and self-sacrifice, and fail to be humble and repentant because you fall so far short of that high standard, then you are compromising everything that Jesus taught and stood for. In that case, what meaning does it have to claim that you are a “Christian”? None whatsoever. It is a tribal designation that you identify with, but which has been emptied of all the content that is distinctive to the one who is looked to as its founder and historic focus.
I will simply add that it becomes much, much harder to make the case in a public forum that Christianity has anything at all to add to social life, or that Christianity is a way of life that is both rational and morally worthwhile, when there are so, so many people out there calling themselves Christians who seem to want to demonstrate the opposite.