Why do people (mostly Christians) think Atheists have no heart and can do horrible things?

The Crusades Inquisitions Witch trials Discrimination against gays, women, other religion and Atheist Suicide bombers Slamming planes into buildings And the ******* of children.

Belief is a powerful thing. Propagandas, religious or otherwise, are tools to motivate individuals to act in ways that seem 'right' from a certain context and perspective, but is completely isolated from the bigger picture. Its not just religions.

Any idea that can create 'us vs them' dichotomy' can fuel some awful actions. Wars are a direct result of this. Personally I don't think people are so 'simple' to classify.

Every person has a history of life experiences, their personal interpretation, an orientations and world view and therefore a specific 'vulnerability' to certain propaganda ideas over others. They could be convinced to do anything. This potential exists in every individual.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.