Livre d'Or

And sometimes passing puts you in a position where people who wouldn't dream of being rude to the face of a person that they could identify as Other (of whatever variety of Other one's talking about) feel as if they can be as horrible as they want, either in general about the Other, or behind the back of someone specific.

This turns into the lovely little dance where one wonders if one should out oneself to that person (who clearly feels as if they can be horrible about something that one actually is, and might change their ways upon being informed that you are ... or might not), or if one should contact whatever office attempts to make sure that people are not horrible to their co-workers, or if one should simply cut that person out of their lives entirely, without telling them why...