If its a business, club or such they can set their FB page to be visible to the public.
My local SCCA region had it that way until last year. Apparently they had some problems and they restricted it to private. I can't see it and they rarely send e-mails. Between that and the car's sure-grip issues I didn't renew my membership.
In contrast is Rob's Rod Shop. Its visible to anyone. The video and pics's his wife took several years ago are still linkable