A strange radio announcement

Listening to the radio whilst driving I heard a very peculiar advert. At first I thought it was a spoof, but it seemed not to be. The announcement went something like:

"Do you suspect a member of your family of being a terrorist? If so, report them to the police now! If the accusation turns out to be false, then no harm is done. This message is on behalf of Durham county council".

I don't spend a lot of time listening to the radio, so perhaps this is a common message. The first thing which came to mind was that this sounds like something you might hear announced in a totalitarian state - inform on your friends and relations. The second thing which occurred to me is that making such accusations about members of your family is far from a harmless activity, and could have very significant consequences for that individual even if they're innocent.