Human Rights give a platform for moralists to wax lyrical. But, what kind of moralist will stand on such a platform, the slave moralist or the master moralist?

Nietzsche was Dionysian. The ancient Dionysian cults used to rip babies to pieces just as nature does. Nature is both the giver and taker of life, both wondrous and terrible at the same time. The need to want to impose Man's moral law over nature is a denial of what and who you really are.

Nietzsche has a passage where he talks about hemiplegia of virtue, or the wholly "Good man". The good man is a funny fellow indeed, a moral philosopher par excellence, but with a major affliction he knows nothing about.

https://www.youtube.com/watch?v=TxZ2OyZdc6U&t=20s

Nietzsche was an immoralist because that is the only way to say yes to life. Ultimately, Good and Evil are not really opposites, they are companions, manifest from one source. As are all so-called metaphysical "opposites".

https://en.wikipedia.org/wiki/Unity_of_opposites#Coincidentia_oppositorum