Why in ancient time people never committed atrocities as horribly as now?

There are many examples of terrible atrocities committed all throughout time that are just as heinous as crimes comitted in the 20th century. Although people were not killed mainly for their nationalities, religious belief played a huge role in these attrocities. A great example of this is the Christian Crusades. Examples of , macres and killings also occured in the Spanish and European settlements of the Americas as well as the medieval viking raids. With a bit more research, you will learn that terrible atrocities are not only a product of the last 100 years.