Let's suppose, hypothetically, that there's someone who is a public advocate on a particular subject, and is relatively well known for his or her advocacy. You happen to know that this writer/speaker/agency director/political candidate's behavior in his or her private life is dramatically at odds with his or her advocacy positions. We're not talking, "Leaves the lights on in the other room while writing about environmentalism," we're talking, "Owns four Hummers and has trophy heads from endangered species on his or her wall." Or, writes movingly about the importance of preventing child abuse, but has broken his or her own child's arm several times. You have this information, and you are also pretty sure you could contact someone who is integrally involved in facilitating this person's further advocacy, whom you reasonably believe would find this person's private behavior appalling, and whom you also reasonably believe might take steps to alter this person's public role given new information. What is your responsibility? Do you have an obligation to offer that information? To keep your mouth shut and not damage someone else's life? Does it vary depending on the severity of the infraction and the importance of the person's position?
I haven't been able to get a handle on this at all. So any thoughts you have, I'd like to hear.