Your fear is out of proportion to reality. 

It's a common feeling but it isn't rational or right. 

Every new wave of immigrant groups has been welcomed the same way to Canada by fearful people like you. The Irish, Chinese, Ukrainians, Poles, Italians, Portuguese, East Indians and now Muslims. Some Canadians complain they don't share our values, they won't speak our language, they smell bad, they sound funny, they treat their women badly, etc etc.

In the end, their children and grandchildren assimilate and become. The next generation of Canadians who then complain about the next group to arrive. 

Where did your family come from?

Mine are from Eastern Europe. They called us "honkies" and said we smelled bad. Some of them were locked up in internment camps in WW I. But here I am today, as Canadian as they come. My kids are pretty Canadian too. 

But my kids are tolerant of new Canadians. They go to school with immigrant kids from dozens of counties. They all get along.