Originally posted by Lokrian
However, since some cultures have begun trying to define themselves as entirely secular, such as the USSR, or China, the theory that it is just religion that spawns this sort of violence is pretty much dead.
Atheism is a religion too. A country can decide that they are atheist, legislate to try to enforce that, and then go off and try to kill Christians in war; that's a religious war, no less because the offensive country has decided they dislike all deities.