Impuzamugambi
Many of the Impuzamugambi were among the two million people who fled from Rwanda to eastern Zaire.  The Tutsi and Ugandan armies went after them.  According to the BBC, "Human rights groups say the [Tutsi rebel army] killed thousands of Hutu civilians as they took power  and more after they went into [Zaire] to [follow] the [militias]."  However, there is no way to know how many members of the Impuzamugambi may have been killed.