Now consider quotes like these:
"The great majority of men have no right to existence, but are a misfortune to higher men." "Not merely a master race whose sole task is to rule, but a race with its own sphere of life, with an excess of strength … strong enough to have no need of the tyranny of the virtue-imperative." "I welcome all signs that a more virile, warlike age is about to begin, which will restore honor to courage above all!" "Who can attain to anything great if he does not feel in himself the force and will to inflict great pain?"
Read this as poetry for your own enjoyment if you wish. But these "poems" both can be and have been used to justify atrocities.