A rather blatant grammatical mistake on this announcement is yet somewhat true and worthy of notice.
An old trick in Iran when a couple are pulled over or questioned about their relationship is to tell the morality police or the Basiji that “we are cousins” or “we are family.” This is a widspeard and well known trick that sometimes works and other times doesn't. This piece of paper, placed on the front door of a business (perhaps a cafe or a motel) reads:
“Followed by the orders of the Union, we can no longer offer our services to the families who are not related.”
Can you imagine having “unrelated relatives?!”