"Thank God we're not all atheists" is the line being taken this Easter by the man tipped as a future head of the Catholic Church in Australia, according to the Sydney Morning Herald.

Anthony Fisher, the new archbishop of Parramatta, "used his inaugural Easter message to launch a scathing attack on atheism, while ignoring the sex abuse scandals besieging the Catholic Church worldwide," reports the paper. It then quotes Fisher as saying:

''Last century we tried godlessness on a grand scale and the effects were devastating. Nazism, Stalinism, Pol-Pottery, mass murder and broken relationships: all promoted by state-imposed atheism or culture-insinuated secularism.''

This equation of atheism with all the sins committed by people who are, or were, atheists, is nothing new. In fact, Peter Hitchens devotes quite a large part of his very readable new book, The Rage Against God, to just that (here is a video of him talking about it).

In a chapter called "Homo Sovieticus" Hitchens, who had been the Moscow correspondent of the Daily Express (although he cannot bring himself to name that newspaper, his long-time employer before he became a Mail on Sunday columnist, anywhere in the book), refers to "the atheist Soviet Union, where desecration and heroic survival were visible around me".

Later, he writes that it is "important to recognise two things -- that the Russian Revolution was an earlier version of the modern revolt against God; and that today's anti-Christian revolutionaries would very much prefer to disown the apostolic succession which leads from Lenin and Stalin down to them." Of Stalin, he says: "Any suggestion that his regime's savagery was connected with his atheism must be vigorously denied."

As you would expect, Hitchens makes his case forcefully, passionately and, yes, intelligently, too (for his very right wing opinions should not blind one to the fact that he is a principled man who always tries to tell the truth as he sees it). But for me, at least, to no avail. For while Stalin's atheism may have been a necessary condition for the atrocities he committed -- I completely agree with Hitchens that "without God, many more things are possible than are permitted in a Godly order" -- it is not a sufficient one. I part company with him when he claims that his preceding sentence proves that which follows it: "Atheism is a licence for ruthlessness, and appeals to the ruthless."

In as much as the absence of God leaves any system of morality floundering when it comes to unarguable proof of its truth, Hitchens is on to something. An atheist society does not have the in-built defences against the will of a tyrannous majority that religion would supply, for instance. But he makes too much connection between the ill deeds of atheists and their atheism. People who are given to ruthlessness can always find a justification for it. Many of the most ardent supporters of Marshal Petain's collaborationist Vichy state, for instance, were right-wing Catholics. But it would neither be fair, nor correct, to blame their Catholicism for their enthusiastic acquiescence in persecuting Jews -- even if they twisted their faith to claim its defence as the basis for their actions.

And this kind of argument works both ways. Last summer, I found myself in the middle of a minor fuss after I wrote a scathing review of Ophelia Benson and Jeremy Stangroom's Does God Hate Women? for the Independent on Sunday. Put simply, my objection was that they detailed terrible barbarities perpetrated against women by religious people, chiefly Muslims, and then pretty much laid the blame on religion, again, chiefly Islam, for those crimes. (They disagreed with my analysis and, for the sake of even-handedness, and also because I didn't doubt their sincerity of purpose, you can find Johann Hari's highly sympathetic review of the book in the NS here.)

If you want to argue, as Hitchens does, that atheists' crimes stem from their atheism, you lay yourself open to the polar, and matching, opposite: that religion is to blame for the evil acts of the religious. There is no shortage of scary verses in the Old Testament, after all, that the anti-religious can pluck out to demonstrate that the Abrahamic faiths are full of vengeful, sexist, murderous, not to say downright bizarre, injunctions.

Neither are right. Just as Hitchens can point out, "When did Christians last burn, strangle or imprison each other for alleged errors of faith?", so too would any reasonable person agree that most of the atheists who are vocal today are not noted for their sympathy with Stalinism, Nazism or, as the archbishop put it, "Pol-Pottery".

Hitchens and Archbishop Fisher, methinks, protest too much. Faith, just like atheism, is a belief about the purpose and order, or lack thereof, in our universe. Bad people don't need either in order to be bad -- and if both sides are truly confident of their claims, they shouldn't resort to such blame games to argue their position.

Follow the New Statesman team on Facebook.