Appears it is you who is ignorant.
The Convention Against Genocide ratified by the U.S. defines genocide as:
...any of the following acts committed with
intent to destroy,
in whole or in part, a national, ethnical, racial or religious group, as such:
1. Killing members of the group (murders of Natives).
2. Causing serious bodily or mental harm to members of the group (mass rapes of Natives).
3. Deliberately inflicting on the group conditions of life calculated to bring about its destruction in whole or in part (diabetes due to inadequate food, Uranium poisoning, etc.)
4. Imposing measures intended to prevent births within the group (forced use of Depo Provera)
5. Forcibly transferring children of the group to another group (family separation)