I heard a while back that
more people had died in the name of Jesus than in the name of Hitler.
I’d always wondered if it was true, it seemed perfectly plausible given the persistence and viciousness of the Vatican during the Crusades. Unfortunately, I had found it difficult to find a number of deaths from the Crusades. But, I found in Google Answers,
this webpage that chronicles numerous human conflicts and includes a category for religious conflicts. The numbers are hazy, of course, when we’re speaking about conflicts hundreds or thousands of years ago when death tallies were not a priority or of mild interest like they are today.
In short, 809 million people have died in religious wars. That’s nearly a billion people.
Oftentimes, a retort is that secular ideals and Godless Communism have killed many more. It is true that Stalin, among others, slaughtered his own people by the millions during the industrialization of Soviet Russia. By comparison, 209 million have died in the name of Communism. Some 62 million died during World War II, civilian and military, on all sides.
Conclusively, more people have died in the name of religion than in the name of Communism or Hitler, or the two combined times two.