The parents of those shot and killed by a fellow student at Michigan's Oxford High School say more must be done to address gun violence. #oxfordhighschool #michigan Subscribe for more Breaking News: http://smarturl.it/AssociatedPress Website: https://apnews.com Twitter: https://twitter.com/AP Facebook: https://facebook.com/APNews Instagram: https://www.instagram.com/APNews/ ​ This video may be available for archive licensing via https://newsroom.ap.org/home