Answer:
underestimating the inherent human capacity for destructive and evil behaviors.
Explanation:
Instinct -- it's something each and every individual is born with. It's not something we learn or something we see or something experience teaches us. For example, why someone likes strawberries, someone does not? Or why we pull away when a bad scent occurs? Why we blink? And many more. It's the same with violence -- someone is born with it in themselves, and someone, simply, is not.
