VANCOUVER - A threat made towards two B.C. politicians has inadvertently set off a conversation about a festering problem within Canada's multicultural communities.

Organizers of a suburban Sikh parade issued an apology Wednesday, saying comments made by organizers that appeared to suggest Liberal MP Ujjal Dosanjh and Liberal MLA Dave Hayer were not welcome at the parade and would have to bring their own security if they chose to come were misconstrued.

But Hayer and Dosanjh questioned the sincerity of the apology and Dosanjh said the incident should prompt a serious debate in Canada about multiculturalism, political correctness and whether that's feeding home-grown hatred.

"My worry is you have a level of political correctness that has been ailing us for some time and you combine that with this multiculturalism that is sometimes misused to hide all kinds of inappropriate behaviour or values," Dosanjh said in an interview.

"If you put the two together, it becomes a very difficult thing to deal with."

In an email release, leaders of the Gurdwara Dasmesh Darbar Sikh temple said the temple committee "would like to apologize to the Canadian community for the misconstrued statements."

But Hayer noted that for years, the parade has included images of people authorities have connected to the assassination of Indian president Indira Gandhi and the Air India bombing.

"I'm shocked at it," Hayer said. "Anybody that shows them as heroes, the murderers are the heroes, the terrorists are the heroes, has no place in Canada. We have to condemn it."

Hayer, whose father was to testify at the Air India trial but was murdered before he had the chance, said he agrees with Dosanjh that Sikh extremism is on the rise in British Columbia.

"We have no place in Canada for any organization to show terrorists, murderers, killers of Air India Flight 182 that killed 331 people, including 281 Canadian citizens, including men, women and children."

Dosanjh noted that while parade organizers identified him and Hayer by name, the apology did not. The two also did not receive a personal copy of the statement.

Dosanjh said he thinks the words were more about preserving the Vaisakhi parade's permits with the City of Surrey.

Michel Juneau-Katsuya, a former senior intelligence analyst with the Canadian Security Intelligence Service and president of the Northgate Group, said the parade incident indicates Canadians need to pay attention to what's happening.

The security expert said the Canadian government has long practised the "speak no evil, see no evil policy," when it comes to terrorism within the country and that leaves residents in the dark.

"The Canadian public is so naive they're almost stupid when it comes to security issues."

Juneau-Katsuya noted that it took the federal government many years to declare the Tamil Tigers a terrorist group, and in the meantime, members of the group terrorized Canada's Tamil community and sent extorted millions to support the quest for an independent homeland in Sri Lanka.

And there are more radicals and angry people coming into the country because terrorism laws in other countries are forcing them out, Juneau-Katsuya said.

Terrorism, he said, isn't just about lighting the fuse of a bomb, but about intimidation, blackmail, physical aggression and bullying.

Juneau-Katsuya said Dosanjh's outspoken condemnation of parade organizers is "courageous."

"You couldn't have a better witness or better testimony."

Dosanjh was viciously beaten more than two decades ago by Sikh extremists because he made a plea for peace within the community after the June 1984 Indian army raid on the Golden Temple in India.

India's Prime Minister Manmohan Singh singled out the problem of Canadian-grown terrorists when he met with Prime Minister Stephen Harper last November,

Singh told reporters he brought up the issue of accused terrorist Tahawwur Rana with Harper.

Rana is a Canadian national born in Pakistan and charged in connection to the 2008 terror attack in Mumbai.