From the MLK jr. article on Wikipedia, a direct quote from Dr. King:

“Since being in India, I am more convinced than ever before that the method of nonviolent resistance is the most potent weapon available to oppressed people in their struggle for justice and human dignity. In a real sense, Mahatma Gandhi embodied in his life certain universal principles that are inherent in the moral structure of the universe, and these principles are as inescapable as the law of gravitation.” [1]
What elements are being discussed here? What are their signs?