Police hold a news conference on what they have described as an active shooter incident at a King Soopers grocery store in Boulder, Colo. Read more: https://wapo.st/3lFHCvO. Subscribe to The Washington Post on YouTube: https://wapo.st/2QOdcqK Follow us: Twitter: https://twitter.com/washingtonpost Instagram: https://www.instagram.com/washingtonpost/ Facebook: https://www.facebook.com/washingtonpost/