In order to have the continued opportunity to express their “generosity,” the oppressors must perpetuate injustice as well. An unjust social order is the permanent fount of this “generosity,” which is nourished by death, despair, and poverty.
In order for the Oppressors to be seen as "good people" they must continue the cycle of oppression to give the oppressed a form of "false generosity." Sorta like Stockholm syndrome: "We're not allowing you to be self-acutalized, but at least we're not killing you."