Analysis of information sources in references of the Wikipedia article "Speak White" in English language version.
In the course of this Canadian tour I realized that the expression “speak white”, by which certain English Canadians mean that we are to switch to English at once, is always current in our country. ... Whatever their background, they exist and there are many of them.
You have even had to admit their existence in the very heart of Quebec since, for every twenty French Canadians you encounter in my house or yours, fifteen can affirm that they have been treated to the discreditable “speak white.” ...
I had already received such an order in Montreal, but the same I jumped when ... a very chic English woman in Vancouver frightened me with it because I had inadvertently addressed them in my own language.
I should add that the lady asked me in these exact words: “Do you speak white?” — and that she didn’t understand why I replied curtly in English, “No, I don’t,” or why I walked out on the spot.
... I could cite names, examples and places, even in Montreal, where this odious phrase is still thrown in our faces by English Canadians. (p. 56)
— Solange Chaput Rolland