Silly movie. They refer to a textbook from 1954 and people long dead as if America hasn't changed in 66 years and 2 or 3 generations. In any case, there are always outsiders who try to stir up trouble. I seem to recall your own country Canada nearly broke up a few years ago when the French Canadians wanted to have their own country. To this day, all government legislation, signs and publications in Canada have to be written in two languages - French and English. You really need to work on your own problems instead of pointing fingers at others. Americans will take are of their own.
I'm not quite getting the tone of your response. This is background material on why the idea of "confederacy" still exists, what one of the factors was that helped that along. You have to stop taking everything so personally all the time. Those things happened, they are there to see, people should know them.
Why does this information bother you?
And you completely misunderstand Canadian bilingualism. It is not so because of that episode in 1977, Canada was founded as a bilingual country, still is, that's why signs and laws etc. are available in two languages. It is not a problem, it is a foundational fact.