I believe all humans are fundamentally good. They do shitty things mostly out of their own ignorance, ego or their past experiences.
Hitler has become the mascot or pinnacle of shittiest things humans can do. So let me go with the flow and ask, if Hitler was left in a jungle or handed to a tribe in Brazilian rainforest after his birth, would he have caused a holocaust? Much less likely.
Like the world is always in balance, all human beings are fundamentally good. If I can’t understand why someone is being mean or an asshole, I would rather think what caused this instead of ‘this person is an asshole’.
These two realisations lay a lot of responsibility on me as an individual, but they are equally liberating from being stuck as a blamer or pointing at the wrong thing when all I can do is control and improve myself.