Every culture murdered, its what defines a society (they say religion & art but what is truly at the heart of that other than art & murder?).
The Mayans murdered their own babies for hope of rain, then the conquistadors murdered them & then somehow a bunch of the English came to America to kill what was left of their own, there were more wars, civil & revolutionary & now Muslim radicals want to kill all ethnicities.
At some point in time there were battles of the what 32 variations of human species which killed each other off too.
Dont forget to feel sympathy for Paleolithic, Mesolithic, Neolithic, Bronze Age victims too Xiaou2 since you are handing out sad ---smurfette--- cards.
Those poor Mongolians too, I feel sorry for them.
FYI: Living in my basement would be a sweet life.