This question should be put instead to ideologues who insist that we believe in tales from the crypt about secret graves, murdered children, babies burned alive in ovens and on and on.
Lots of conservatives keep coming back to the residential school graves story. They see the lack of remains (so far) as a victory.
I ask them: what about the children who were actually, inarguably taken from their families and put in those schools? Isn't that scandal enough?