Jewish groups are condemning a controversial Nanaimo city councillor who has referred to the downtown tent city as a concentration camp.

Gord Fuller first made the reference to the Discontent City homeless camp in a Facebook page in July -- and then on Twitter in August explained he was using the term to refer to the concentration of a large group of people in a small space.

B'Nai Brith Canada says the comparison is grossly offensive and an insult to the memory of Canadian Holocaust survivors and it sent a letter to Fuller on August 31st asking him to remove the comments from Facebook.

It says he replied that he has a substantial knowledge of concentration camps and he didn't mean the comparison as a slight -- but B'Nai Brith says if he's a student of history he should be the first to understand why his comments are offensive.