Biologist Richard Dawkins launches into a full-on appeal for atheists to make public their beliefs and to aggressively fight the incursion of religion into politics and education. Dawkins' scornful tone drew strongly mixed reactions from the audience; some stood and applauded his courage. Others wondered whether his strident approach could do more harm than good. Dawkins went on to publish The God Delusion and become perhaps the world's best-known atheist.