You can find some anywhere. The problem is that you have proposed a cause-and-effect realationship which has no predictive power - or rather, the real-world evidence is against it.
I disagree. Having a “very uniform population” may lead to an increase in bigotry, which is then vented upon those rare persons who are not of the majority - hence cross-burnings on lawns and the like are more likely where the population is mostly of one majority ethnicity, directed at those few rare outsiders daring to live there - than in a multi-cultural setting.
You are simply wrong. Try hanging out in my neighbourhood this summer, and catch the Ukranian festival that closes off the street.
What you miss is that people are quite capable of having multiple levels of identity and allegiance - they idenify as (say) Ukranian in ethnicity and culture, while still being “proud Canadians” in nationality.
In Quebec this isn’t an issue (or if it is, it is the whole issue): that many people in Quebec want their nationality to line up neatly with their ethnicity. People from Quebec often seem to view non-Quebec Canadians in the same light, as their mirror-image - your post is a perfect example of this - as “ethnically Canadian”, a Canadian “people” who identify themselves as “Anglos” as much as some Quebec folks identify themselves as “Québécois”.
But such is not the case. Many if not most outside of Quebec have multiple levels of definitions for themselves - whether provincial (Newfoundlanders for example), or ethnic-religious (Jewish), or by culture or origin (Ukranian, Jamacan). Their view of being “Canadian” has less to do with self-idenity as an ethnic group, and more to do with allegiance to a particular vision of how society ought to be run, a particular set of laws and institutions which, for many, created a safe haven from the hell-holes they or their ancestors fled from. Often, these hell-holes were created by folks who wished to create ethnic conformity (for example, in Europe).
Hence the simmering dispute with Quebec. It is not, reagardless of what some people from Quebec may think, a symmetric ethic conflict between two big ethnicities, defined primarily by language. It is, rather, a conflict over how society ought to be ordered - as ethnic enclaves, or as a society where ethnicity is irrelevant.
Bilingualsim is a well-intentioned but doomed compromise. Doomed, because really aside from gov’t coercion or inherent interest in the language there is no particular incentive to be bilingual in French, as opposed to (say) Spanish, Russian or Chinese. The reason is that we live on a continent where French is very much a minority language, and the language of commerce, of science and of culture is primarily English.