While I don't entirely disagree, it does imply that intersectionality by this definition is dehumanizing, which I don't think we should infer, unless we should?

While I don't entirely disagree, it does imply that intersectionality by this definition is dehumanizing, which I don't think we should infer, unless we should? (many would agree) Otherness is a historical human norm, but it's very possible your examples are also a necessary condition. Othering and deception, are necessary conditions, unless there is an example of a massacre where these were not present. The sufficient conditions, who knows, I think that's in the details of the otherness and psychopathy of the leadership, but the sufficient conditions to make it possible are more complex.