The article states “ This is the challenge of reconciliation - to make the white, non indigenous citizens of Canada face the fact of their country’s past and continuing racism.”
In fact the actual challenge appears to be to make the descendants of the indigenous groups (who the vast majority of white and non white Canadian citizens would agree were mistreated) realise that reconciliation is a path to the future and not simply a forum to discuss past wrongs. 
The article is another example of the fact that there is a double standard to political correctness whereby all minorities are able to make hateful racist statements against anybody and everybody who is white - the majority of those quoted in the article are educated people and they should simply know better.