In She and Jane Eyre, POC are separated and looked down upon. In Jane Eyre, this happens with Bertha, who is dehumanized and disenfranchised. In Her, the native tribes are seen (with the exception of the upper-class Ayesha) as inferior.
This involves racism and imperialism as well, but in the process of these things, the POC in question are also viewed as a lower class.