Atheism as a word just did not explain the danger and harm religion has inflicted on people. Positive or negative atheism as terms do not bring out the total rejection that religion should have anything to do with how society should be governed or considered a civic role to be involved in such a duty. That was why Hitchens used the term anti-theist.
Precisely because it is such a frequently used criticism of religious faith, the argument that war is a product of religion is worth considering. After all, we have recently had some horrific imagery from the Middle East that seems to suggest that religion is a bad thing. Nevertheless a number of points strike me.
Europe has an unhappy history in the way it has dealt with the made up 'crime' of witchcraft over the centuries. Professor Owen Davis of the University of Hertfordshire estimates that between 30,000 and 50,000 people, mainly women, were executed after being found guilty in witchcraft trials between 1450 and 1780.
Problems start back home, in poverty, with bad parents and poor role models, the children given no mentors or guidance as they're ignored by society at large. The only available guidance they receive - the dirty words from religious clerics and violent lyrics from music. It's all about becoming indoctrinated with vile bile.