Just because our secular society functions to squash some religious zealotry does not mean it's not chomping at the bit to come out, and it does frequently. Remember the manufacturer, selling rifles to the military, who put that biblical scripture on their sites? I do and so does Islam. Or, what about the way that religiosity gets used as an excuse to trample the rights of others, whether it be abortion, putting ten commandments displays on government grounds, etc. There's plenty of warning signs that American extremists are not controlling their impulses well.
American history is also rife with religious conflict, from our earliest days. The Catholics and protestants were notoriously bad at getting along and, in many ways, still are. People lost their lives over that ****. One could also argue that the genocide of the native Americans had a religious component. We believed that if god didn't want us to massacre savages, he'd have stopped us. That same sort of "logic" still exists in religious minds and it worries me every time I see their overt acts of religious dominion.
