Oh, I wouldn't doubt it. Atheism is huge and varied as well. But when I see militant atheists attacking "religion" on the net, it's usually Christianity they're attacking, and much more seldom Judaism, Islam, Buddhism or Hinduism, or any of the others. There are valid reasons for that, in that Christianity is about the only religion that's actually bothering to attack back...but the other religions have their faults as well, cultural chauvinism or no cultural chauvinism.