
Eichmann in Jerusalem: A Report on the Banality of Evil is a 1963 book by political theorist Hannah Arendt. Arendt, a Jew who fled Germany during Adolf Hitler's rise to power, reported on Adolf Eichmann's trial for The New Yorker. A revised and enlarged edition was published in 1964.
Regular people, not sociopaths, are responsible for most of the evil in the world. There is no tiny minority of 'evildoers' that we could root out and be pure from.
Other bad things happen because of unintended consequences or the collective behavior of many people. Climate change or deforestation are not caused by greed or scheming CEOs; it's a side effect from the actions of billions of people individually trying to better their lives.
If you're interested in the subject I can very much recommend reading it. I can also recommend "The Ethic of Expediency" which deals with the same subject, but attempts to indict all technical writing instead. I personally changed my writing style after reading it to inject more humanity into it.
Thanks for posting this.
edit: I cant come up with any other one person more likely to be an authoritative source on this topic, but i would love alternative suggestions.