it certianly is continued by christiansWell it if was a Christian problem, it would be continuing into the 20th & 21st centuries.
Of course it hasn't.
Because it isn't a Christian problem...it's an atheist problem.
"..."the assertion is that religion has caused most of the killing and bloodshed in the world. There are people who make accusations and assertions that are empirically false. This is one of them."[1] Koukl details the number of people killed in various events involving theism and compares them to the much higher tens of millions of people killed under atheistic communist regimes, in which militant atheism served as the official doctrine of the state.[1] It has been estimated that in less than the past 100 years, governments under the banner of communism have caused the death of somewhere between 40,472,000 to 259,432,000 human lives.[2][3][4][5][6][7] Dr. R. J. Rummel, professor emeritus of political science at the University of Hawaii, is the scholar who first coined the term democide (death by government). Dr. R. J. Rummel's mid estimate regarding the loss of life due to communism is that communism caused the death of approximately 110,286,000 people between 1917 and 1987.[8] Richard Dawkins has attempted to engage in historical revisionism concerning atheist atrocities and Dawkins was shown to be in gross error (see also: Atheism and communism and Persecution of Christians in the Soviet Union)."
Atheism and Mass Murder - Conservapedia
the irish wars catholics agianst protestants ,
WW2 catholoics against jews
eastern
europe chrisitans agianst moslims ,
and so it goes on