Misinformation experts warn of dire consequences in online hunt for blame  CTV NewsB.C. school shooting victim tried to lock library door to save her classmates  Global NewsRCMP say investigation of shooting at Tumbler Ridge Secondary School completed  CityNews HalifaxAs shootings’ shock subsides, Tumbler Ridge searches for normalcy  The Globe and MailLangley vigil honours victims of Tumbler Ridge mass shooting, including former local student  CBC