types of command and control organizations.

Imagine a scenario where we are supervising outbound logistics for our U.S.-based organization in a third-world country.  We are assigned to a contracted factory co-owned by the local government and a local entrepreneurial family.  The factory's operations appear very profitable.  We continue to be bothered by what seems to be unequal treatment of one ethnic group working at the factory.  Our informal investigation into the situation indicates that the ethnic group in question is part of a local indigenous tribe where members are increasingly moving into the local village where the factory is located in order to earn money as their tradition of living off the land is increasingly difficult due to drought.  Using a more formal approach, how might we proceed with making or recommending an ethical decision