The term “new atheism” generally refers to the claims, made prominent by Richard Dawkins, Christopher Hitchens, and others, that religion is both objectively false and socially pernicious. According to Peter Berger, the new atheists have little to say that has not been said by critics of religion since the 18th century. What distinguishes them is their lack of intellectual subtlety:
What is at least relatively new about the “new atheism” is its aggressiveness and its attitude of absolute certainty (in that respect, curiously mirroring conservative Christianity, its main antagonist). Atheists can be described as people who have heard a voice from heaven telling them that heaven does not exist. There have been tormented atheists such as Friedrich Nietzsche, who proclaimed the “death of God” (he understood that this event, if it really took place, would be a cosmic tragedy). More recently Albert Camus in his novel The Plague depicted individuals who, without the comforts of faith, heroically defy suffering and evil. This is a far cry from the flippant contempt for religion that characterized H.L. Mencken (I would see him as a precursor of the post-1960s intelligentsia). He once proposed that the universe is a gigantic Ferris wheel, that man is a fly who happened to land on it and who thinks that the whole contraption was created for his benefit.
Read more on American Interest: http://www.the-american-interest.com/2015/01/07/new-atheism-and-the-rectification-of-names/