Apparently in the early 1990's there was a rumor that Lego would start including minifigs of homeless people in their playsets in an attempt to make them more "relevant" and children "more aware". When asked about this rumor, a company representative said that "Only happy smiling people live in Legoland".
That seems to be irrelevant - I've seen happy smiling homeless people, and while they're doubtless delusional or in their own world, their feelings seem to be genuine. It's entirely possible they are in fact already IN Legoland, if only in their head.
Anyway, it's good to see we've moved past this culturally, as there really are so few "city" lego playsets now and infinite "pirates" and "space" and "indiana jones and the awful movie tie-in" playsets. I guess you could have a homeless astronaut or a homeless pirate though.