Reading through some silly "Duck Dynasty" fight threads around the internet, I'm reminded of how much "Christianity" is just a tribal marker for many people. It's about choosing teams and then cheering for your side. It's like being from Texas, or rooting for the University of Michigan. Of course there are serious believing Christians out there, but if people were that serious about their religion I'd expect that they'd know at least a bit more about it than many of them seem to. I don't mean "interpret the Bible the way I do," I just mean have some minor grasp of what's in it.
Also, too, "patriots" and US history.