What is Anti-humanity?

Anti-humanity definition and meaning on Dictionary terms:
noun, plural huA.manA.iA.ties.
all human beings collectively; the human race; humankind.
the quality or condition of being human; human nature.
the quality of being humane; kindness; benevolence.
the humanities, the study of classical languages and classical literature. the Latin and Greek classics as a field of study. literature, philosophy, art, etc., as distinguished from the natural sciences. the study of literature, philosophy, art, etc.