Socialism killed more people in the 20th Century than Christianity did in the preceding 19 centuries.And only Islam has killed more people than socialism.
In fact, islam kills more people each year than did 350 years of the Inquisition. (hat tip TheAstuteBlogger)
HISTORY OF JIHAD
Thank you for the links. I was doing a lot of Googling and Wikipeding yesterday on these very same subjects.