Protesters give the raised arm salute to Montreal riot police as they guard the back entrance of the headquarters of the Quebec Provincial police in Montreal on Monday, May 21, 2012. (Peter McCabe / THE CANADIAN PRESS)
Some protesters have been using it repeatedly in recent weeks to mock Montreal police at demonstrations in which chanting crowds have referred to local officers as the "SS," called them fascists and compared them to Nazi police for their alleged brutality.
There have also been swastikas on anti-police pamphlets being distributed.
It chose to issue a statement decrying the behaviour on Tuesday, which would have been the 83rd birthday of Holocaust victim and child author Anne Frank.
The group said the actions defile the memory of those who died in the Holocaust, of those who survived under the Nazi regime and of those who fought against the Nazis in the Second World War.
"The actions of these protesters, whether for the purposes of deriding Montreal police or drawing attention to their cause, defile the memory of the Holocaust and remind us just how quickly anti-Semitism and the manifestations of hate can venture their way into our public discourse."
Photos of the Nazi-themed protests have been circulating on social-networking sites, causing some shock and outrage. The photos have been posted on the Internet in recent days, sometimes without context, leaving viewers puzzled about why Montreal protesters are using the salute.
One German visitor to Montreal remarked to a Canadian Press reporter over the weekend that he was shocked to see the salutes on Crescent Street, a trendy Montreal party strip.
In some countries like Germany and Austria, the gesture itself and Nazi-era symbols are outlawed. Just last year, a Quebecer was arrested for performing the salute on the steps of the Reichstag in Berlin for a photo.
"These are clearly not support for Nazism or intended as anti-Semitic displays," said spokesman David Ouellette.
Dimant, of B'nai Brith, put it even more bluntly.