Some newspapers refused to run the Dansk Folkeparti's ad, The Copenhagen Post reported. Jyllands-Posten, the newspaper that became notorious several years ago for its Mohammed cartoons, and Ekstra Bladet did.
The full-page ad lists 700 names with the message: "One person on this list is a danger to Denmark's security. He will now become a Dane."
While the person is not identified, he is reported to be a stateless Palestinian who has been identified as a possible security risk by the Danish intelligence service. He is one of several hundred people previously wrongly rejected for citizenship under a United Nations convention on stateless individuals.
"The advert does not promote integration," Ahmed Dhaqane, the head of a Somali group, told Ekstra Bladet. "Instead it fosters hate and polarisation. We live in a society ruled by law, so criminals should be punished, but only once they have actually done something criminal."