Nietzsche is known as the anti-philosophical philosopher. Humans and logic are not capable of solving our problems, contrary to the modern worldview. This view was upheld by events like the Russian Revolution, WWI, WWII, and ideas like evolution, quantum physics, behaviorism, etc. This feeling of universal chaos and meaninglessness had to be filled in order for life to continue. This void for many was filled by existentialism, the final paradigm resulting in relativism.
Existentialists accept the chaos and void of meaning held out be the universe.
This leads to two results relating to relativism. These two results of existentialism are as I see it, the final steps for relativism, and in fact are themselves relativism. There are two types of relativism today in American culture. The first is cultural relativism. This is a development from anthropology in the study of other cultures.