US Democratic vice presidential candidate Tim Walz addressed the mass shooting at Apalachee High School while speaking at a campaign rally in Erie, Pennsylvania on Thursday, September 5, saying the country has “work to do” on gun violence.“Our hearts go out to the two students and two teachers who were killed,” Walz said. “That community will never be the same.”“I, for one, am sick and tired of hearing about thoughts and prayers, rather than actually doing something,” he said.“I know guns. I