Prime Minister Justin Trudeau, Williams Lake First Nation Chief Willie Sellars, and Minister of Crown Indigenous Relations Marc Miller walk together on the former grounds of St. Joseph's Mission Residential School, in Williams Lake, B.C., on March 30, 2022. An Academy-Award-nominated film that follows an investigation into deaths, abuse and missing children at a former British Columbia residential school should be shown in schools across Canada, says a First Nations leader. THE CANADIAN PRESS/Darryl Dyck