William Lutz (Editor), “Mr. Orwell, Mr.Schlesinger, and the Language,“ Beyond Nineteen Eighty-Four: Doublespeak in a Post-Orwellian Age, (Illinois: National Council of Teachers of English, 1989), p.22:
This polarized view of human nature, that there are Good people (Our side) and bad people (Out There), often leads to catastrophe. Persecutions, crusades and wars have been carried out in the past as ‘good’ people, with the best of intentions, sought to punish or eradicate the “bad.’
A more realistic attitude toward human nature is that every individual has the potential and capacity for good and evil and that all people are complicated mixture of these qualities.