How do the factors associated with the traditional domestic situation, in terms of race/ethnicity, gender and class, relate to the argument that the Native American and African American communities were victims of American genocide?

Victimology 

Traditionally victimology focuses on domestic violence situations. After reading the material for this session.

How do the factors associated with the traditional domestic situation, in terms of race/ethnicity, gender and class, relate to the argument that the Native American and African American communities were victims of American genocide?