This brief article in the Charleston Gazette speaks volumes about how both atheists and Christians are viewed in our culture. As you will see, it also highlights a common myth about both atheists and Christians.
While returning from a trip to China to adopt a child, a couple is treated to the following from a passenger on the plane, "That's so nice. You must be Christian." Since the couple did not consider themselves Christians, I expect they were somewhat surprised and maybe even offended to hear such a comment.
Of course, the likely source of the comment is the belief that only Christians do good things. A non-Christian couldn't possibly do something positive. In fairness, I have certainly caught myself jumping to negative assumptions about Christians. Sometimes, I am even proven wrong. I guess that believing in things without evidence can be problematic.