Very interesting remark by a guy named Russianbear at
Atheism is not the same as religious intolerance. I am an atheist, and I think religions are stupid, but I am quite tolerant of people's stupidity and ignorance in general, and of religion-related stupidity and ignorance in particular.
Most atheists don't prejudge. (Some, like me) judge. And that happens AFTER the fact, so PREjudice is not the right word.
In my experience, atheists are relatively quiet; it is religious people who tend to try to ram their beliefs down other people's throats. It is also a fact that atheists tend to be better educated than religious people. And atheists tend to be more tolerant. I am yet to see atheists fly planes into skyscrapers or blow themselves (and many other people) up for their atheist beliefs. Those things are done by folks who believe in god(s).
And of course, "fundamentalism" kinda implies religiousness :)