The first version of this joke I remember learning of came from Scottish comedian Jerry Sadowitz:
"In 1991, Sadowitz was knocked unconscious by an audience member during a performance at the Just for Laughs Comedy Festival in Montreal, where he mocked French Canadians, starting with the greeting "Hello moosefuckers! I tell you why I hate Canada, half of you speak French, and the other half let them."[27] The rarely quoted follow-up line, which Sadowitz claims is what actually led to him being attacked, was "Why don't you speak Indian? You might as well speak the language of the people you stole the country off of in the first place."[28]"