If xenocide is the word for species homicide, what would be the analogous term for doing this to one's own species? I was reading an essay on anti-natalism and thought there must be an obvious construction along the lines of suicide, homicide, fratricide, patricide, xenocide, etc. Googling has turned up nothing.
The prefix 'auto-' means 'self-caused', and the word you want is 'autogenocide'.
Autogenocide is "the mass killing by a government or regime of a section of its own people".
Coined in the late 1970s.