The professor spreads one of Canada's enduring myths when he claims: 

"And above all, its immigration policy is tolerant and open-minded, making for the truly multicultural polity that provokes the world’s envy."

Wrong.

The fact that our "immigration policy is tolerant and open-minded" has NOTHING to do with Canada's success in assembling a PEACEFUL mix of diverse peoples. Canada's success in assembling a peaceful, low-crime mix DOES have to do with its immigration policy, but not in the way that the professor pretends.

Canada is peaceful because, unlike many countries, Canada for decades has had a powerful filter in its immigration machinery. And that filter is there to ensure we mostly receive very intelligent, well educated families, where the daddy and/or mommy from overseas is a doctor, a scientist, a pharmacist, an engineer.

Much about intelligence is genetic, and kids of smart parents tend to address problems without violence. That is the REAL reason why we have peace.