The notion that the human race is sadistic or evil is a common misanthropic illusory idea of folks who are bullied by folks, who were also bullied, commonly associated with domestic violence and sexual abuse as well.
But no, not factual as even our closest primate cousin the Bonobo who shares a similar empathy gene and empathy related brain structures lives in relative harmony and peace with free loving ways as opposed to the Chimpanzee who still rapes and pillages with the other version of mind.
People can become like Chimpanzees IN THIS WAY, WHEN the cultural social environment is abusive and particularly WHEN the parental environment is non-nurturing and or abusive in the first couple of years in life.
BUT humans are born, overall, like peaceful free loving Bonobos and that's just a scientific fact, now that science has caught up to the teachings of the historical men Jesus AND BUDDHA per the golden rule of living TRUE TO MOTHER NATURE TRUE, AKA GOD, TOO, IN PEACEFUL LOVING WAYS OF SHARING AND COOPERATION.
Conversely yes, instead of collecting goods of subsistence and dominating others through subjugation with tools of illusory cultural fears AND repression and oppression of GOD given human nature, particularly the free expression of full pro-social emotion, sexuality, and practice of reproductive freedom.
But that is culture and or religion designed as nurture, not nature as evolved by GOD.
There is no escaping Mother Nature, except for 'fools', and no, not the kind of fool that plays the 'Tarot Card of Fool', as that is the highest of human being who directs their destiny with relative free will, and a topic perhaps for later with those with eyes that can see more than skin deep.