Actually, when religiously minded people find out that you're an atheist, many have a tendency to equate that with some sort of devil worship, and a lot of those will start reciting some passage from the Bible in order to 'enlighten' you.
And what is commonly understood as 'devil worship', by the way, might be something like worshipping nature or a big rock in your backyard. So what? As long as they're not hurting anybody, (say like some people who might not get their sick baby timely medical care, because their version of God will take of it all) what business of it is of anybody else to impose their values?
If you want to believe in any of the myriad religious teachings, hey, you're an American, you've got that right, and more power to you. When you want to impose your particular brand of religion on everybody else, whether they're Christian, Muslim, Jewish, Hindu, Buddhist, pagan, or atheists, people are going to have a tendency to get rather testy about it.
I know that's difficult to understand for people who live strictly 'by the Book', but that doesn't change the reality of the situation.
Therefore, nobody should be surprised when there's a backlash against certain religious groups who advocate that a government of all people should interpret civil law strictly according to one particular religious belief and it's accompanying tract.
I would point out to you that backlash is coming from the Christians who have seen the damage caused to our society by the secularists. Not the other way around.