Years ago I heard a federal agent describe his mistake in a major crime investigation in a way that broke my heart because that mistake had obviously broken his own heart. I also felt deep sympathy with the victims of the crimes committed, and I still do, as the agent did. Compassion and pity and anguish for all involved.
I wasn't there in that original hell, but listening to such testimonies puts a burden on the listener.
I still haven't figured out how to share that story with my own students, though I ought to--and I mean that in the best ways.