Atheists? Where are the Atheists?
Well the official definition is, "People who lack belief in God or any higher power" or something along those lines.
What it usually comes down to on the internet? People who hate every religion, hate anyone who is religious, and will look down on and treat you as a second-class human if you display any religious beliefs.
Now not every Atheist matches the pattern above, but sadly the ones who do are the more vocal type
What you describes is
Antitheism, not Atheism. Well actually you described it in a fallacious maner, a better definition would be:
"Antitheism = those who regard theism as dangerous or destructive"
It is true that most "new atheists" are antitheists (Richard Dawkins, Sam Harris, Christopher Hitchen, Bill Maher, etc)
As for treating religious people like second-class human, it doesn't come with the antitheism, as antitheism is about being against an ideology, not against people.
But i would say that some religious people are so backward in their way of thinking that yes, i do look down on them, because their view of the world is so incredibly stupid that they deserved to be ridiculed, and because these people are dangerous and don't deserve to be taken seriously. To give a few example, people like Ken Ham, Ray Comfort, Colonel Harthacanute and the like don't deserve to be taken seriously
Edited 3/29/2015 18:47:41