Most people are neither exceptionally good nor exceptionally bad. This sounds like a tautology but it's worth printing some type signatures even if they could be inferred.

If you look at any truly large scale Holocaust, whether in Rwanda in 92 or the Third Reich, you find that a few people will sacrifice themselves to defend others, a few will be monsters at the first opportunity, and most will be steered by whether the leaders are the first or second kind of people.