[Frozenlock]

>Do you believe that the patriotic affinity between Canadians is somehow lesser than that between Germans, because we don't share a well-defined genetic heritage?

Lesser patriotic affinity for minorities? Absolutely. (I am Canadian)

There's even a study[1] showing that with increasing diversity, you get:

Lower confidence in local government, local leaders and the local news media.

Lower political efficacy – that is, confidence in one's own influence.

Lower frequency of registering to vote, but more interest and knowledge about politics and more participation in protest marches and social reform groups.

Higher political advocacy, but lower expectations that it will bring about a desirable result.

Less expectation that others will cooperate to solve dilemmas of collective action (e.g., voluntary conservation to ease a water or energy shortage).

Less likelihood of working on a community project.

Less likelihood of giving to charity or volunteering.

Fewer close friends and confidants.

Less happiness and lower perceived quality of life.

More time spent watching television and more agreement that "television is my most important form of entertainment".

[1] http://onlinelibrary.wiley.com/doi/10.1111/j.1467-9477.2007....

[said]

I think you're shadow-banned. Your two most recent posts are dead.

[eru]

It would be instructive to compare Switzerland here. They are famously made up of German, French and Italian speaking parts. (And a fourth language that nobody cares about. And lots of immigrants these days from all over Europe.)

[lgieron]

The US would seem to counterpoint that, esp. with tons of people participating in voluntary work and civic engagement (compared to other countries).