lescaine,

  I've been posting here 11 years. I've never seen wildly irrational angry commenting as these months since Trump's election.

  You're right that historical revisionism is a problem. I read 30 years ago what Orwell wrote about it. It's clear most revising and whitewashing of history (and ignoring the more egregious parts) is done by the right wing (e.g, imperialists, monarchists, conservatives), The right wing has always written history, including Canadian history, because the right wing has been the victors of history (e.g.,chroniclers of the British Empire and American hegemony).
   The politically correct cannot change history and have no reason to revise it. But women, Jews, ethnic minorities, gays, First Nations, certainly have a right to point out examples of Canada's history that have been less than glorious.
   Obviously, in light of where we want to be now (growing democracy, world peace, social equality, economic progress for all), history falls way short.