TORONTO -- One year after a mass shooting in Nova Scotia took the lives of 22 people and injured three others, family members look back at a year of loss and trauma. Jenny Kierstead, whose sister Lisa McCully was killed in the April 18 shooting in the Portapique community, is hoping community members can finally come together and grieve collectively. “The commemorative walk has been designed to give the public an opportunity to grieve and to come together outdoors and to remember the victims of last April, and to process their grief, ” she told CTV News. Kierstead, along with other members of the Nova Scotia Remembers Legacy Society, will participate in planned memorial events on Sunday.