Leave Sir John alone.
There's a simple solution to the controversy over replacing Sir John A. Macdonald's portrait on the $10 bill with a portrait of Viola Desmond: Now that our banknotes are made of plastic instead of paper why not reissue the two dollar bill and put Desmond's picture on it? And, while we are at it, replace the politicians who grace the $50. &100. bills with pictures of Terry Fox and war hero and Nobel Laureate Dr. Frederick Banting. As for the $20. bill, it should picture the greatest Canadian of all time, the one-and-only Northern Dancer.