I've been stumped on this for a long while, when you encounter a character with the Outcast tag.
How would your character know that said outcast is not welcome in society? I know I could DM the person and ask, but I'm not really comfortable adding the OOC element to things unless I need to. (example: "Hey, are you okay with a raise?" after a fight)
I've seen a few descriptions that have "This character was banished from <place> for <crime>" which is really helpful, but I'm not sure what to do in cases where I've got nothing to work with.