I noted the other day the similarities between some ancient South American religions and modern puritanical Christian fundamentalism. This is of course, only my conclusion - but feel free to take it all with a pinch of salt (and, if it is your "world-view", light):
The Maya, Toltec and Inca practiced human sacrifice of their enemies to satisfy the wrath of their blood-thirsty gods. Oddly enough, despite this minor shortcoming, we miss the contribution their cultures made to the body of scientific knowledge we as a society would have benefited from today. For one thing, their method for predicting the end of time and all life on earth by December in two years time, would've been quite nice (thank you, Mr Cortez). It would have been nice to know if they were accurate, scientific - or just smoking their orchids at the time. I am sure there will be some people who will actually give away all their worldly goods a day early and go sit on the nearest mountain to get a good view of the end of the world. I hope they remember to take pop-corn, if anything to make the trip worth anything.
Sadly, the records and knowledge of these ancient and (in some ways) highly civilized cultures were all but completely destroyed by the Spanish marauders when they conquered South America. Today we know they indulged in practices such as genocide and "ethnic cleansing" while under the mistaken impression that they were doing "God's work", while stealing land and hunting treasure. I don't wish to be a pain, but this seems strangely familiar, don't you think?
Christian fundamentalists today may not actually kill the people they don't approve of, or consider their enemies in their temples - but they certainly do make the gesture by destroying and endeavoring to destroy their lives in the world outside their churches.