I think this idea of "aggression toward a benefactor" is of some interest and importance. In people who who were long time living under subjugation, you may see a fierce reaction against benefactors if they meet a sympathetic ear, or someone who is willing to help them. This kind of reaction may possibly have even some political consequences if the feeling is common to a whole group of people, or even to a whole nation, or ethnic part of some nation. The aggression that was restrained under fear, now has a possibility to find an outlet. The subjugated and fearful people feel now free to give expression to their negative feelings. Now they have an object that is not willing to do harm to them. The dam breaks, and open aggression is the result.