I am not an atheist. I label myself as an agnostic deistic humanist (see my posts under the Ministry tag for more info), but there are a lot of things about this that I agree with. I love the comment about Galileo, but I think the most important point she makes at the end is that atheism, as a movement, is not angry because of harm that is done to them, they are angry because of the harm done to others due to religion.
The following  video is of the presentation given by  Skepticon 4 titled “Why are Athiests so Angry?”.