The current (or as of a couple of minutes ago*) opening on the entry for 'Atonement' on Wikipedia:
"The atonement is a superstition found solely within Christianity and Judaism and considered a cornerstone of the destructive anti-life nature of monotheistic military imperialism."
(The subsequent article, incidentally, only discusses Christian views of Atonement [there being a separate article on atonement in Judaism]-- and does so, from my perspective of near total ignorance, perfectly decently, if not always gramatically.) No more is said about monotheistic imperialism, or how atonement fits into it.
(I should add that I'm a big user of wikipedia, and think that it's a great resource, however unreliable in places it may be.)
*Now edited to be suitably impartial.