When we try to be kind to someone who needs help and do what you can to help them, only to be rejected. That rejection, large or small, can change the course of good and evil. Many have stopped fighting for the light, because they have seen that darkness is the only answer. Perhaps it is. Perhaps it isn't. We know not of the future.
Should evil be the answer for creating an even greater good? Many now say yes, but that shred of light is what stops them from creating a product of evil. What is right and wrong? Must light and dark be compared to good and evil? Even the light can cause destruction and even the darkness can bring comfort.