Weakness or Wickedness?

Many aspects of "Beware of Pity" have permeated my thoughts since we saw it. One thought, one line, has stuck out to me however, and become a kind of guiding principle in my assessment of two of the chapters in the book in particular. I'm paraphrasing, but the basic gist of the line from "Beware of Pity" states that there is no wickedness, only weakness.

As I read the two side by side chapters on Marlene Dietrich and Leni Reifenstahl, two women living in the same era whose lives diverged over their choice to become a part of Hitler's party or fight against him. We are provided with the full scope of Marlene Dietrich's strength, drinking snow out of a helmet, hiking right along side the Allied soldiers and doing her part to bring down the Nazi party. On the other hand we're given an account of Leni Reifenstahl, a woman in a man's business, who is presented with the opportunity to further her career by creating propaganda films for Hitler, a proposal that, if we're being honest with ourselves, would sway many struggling artists. When we consider not just these two women, but any figures throughout history whose actions we so quickly condemn as "wicked" or "pure evil," we are quick also to console ourselves with the thought that we are good people without the capacity for evil. However, if we consider the fact that wicked actions may simply be the result of weakness, we are presented with a rather humbling depiction of human nature, of our nature even. Like Leni, which one of us, in the vulnerable state of an emerging artist, does not feel weakened and susceptible? Though of course (hopefully) this would not result in the pre-meditation of wicked actions concocted by our own imagination, it would result in ground fertile enough for a wicked seed to be planted by another.