Old Testament morality. A favorite claim of the New Atheists is that the OT includes various sorts of immoral accounts, teachings, and commands. A first line of defense, once again, would be to inquire where atheists like Hitchens and Harris even get their notions of right and wrong.
There was the New Age Movement. Overlapping with that and extending far past it is Postmodernism. Now the New Atheism is in full bloom. Although the overall percentages are fairly small, some polls tell us that atheism is on the increase in the United States, especially among teenagers and young adults.