An unequal power relationship is the basic component of a power structure. The person with superior power, either due to trust or to technology access or superior knowledge, does not necessarily have superior ethical judgement, just because they are trusted, technologically enabled, or better educated.
I think it would be all of the above, if you could provide a passage with the question it would be helpful. But I'm not 100% sure if it would be all of the above.
