Genocide doesnt require direct killing. Forced sterilization and destruction of cultural identity is also genocide.
From Wikipedia:
"the destruction of a nation or of an ethnic group" by means such as "the disintegration of [its] political and social institutions, of [its] culture, language, national feelings, religion, and [its] economic existence".
And there is plenty of documented proof of that. To deny that is to deny your own ability to see, read and think.