A celebration last week in Kansas City that was meant to mark the Chiefs' win in the Super Bowl took a horrifying turn when a burst of gunfire killed one person and injured nearly two dozen others. CBS News senior national correspondent Mark Strassmann reports. "Face the Nation" is America's premier Sunday morning public affairs program. The broadcast is one of the longest-running news programs in the history of television, having debuted Nov. 7, 1954, on CBS. Every Sunday, "Face the Nation" moderator and CBS News senior foreign affairs correspondent Margaret Brennan welcomes leaders, newsmakers, and experts to a lively round table discussion of current events and the latest news. Subscribe to the "Face the Nation" YouTube channel: https://youtube.com/facethenation/​ Watch full episodes of "Face the Nation": https://www.cbsnews.com/face-the-nation/full-episodes/ Follow "Face the Nation" on Instagram: https://instagram.com/facethenation/ Like "Face the Nation" on Facebook: https://facebook.com/FaceTheNation Follow "Face the Nation" on Twitter: https://twitter.com/FaceTheNation Subscribe to our newsletter: https://cbsnews.com/newsletter/ Download the CBS News app: https://cbsnews.com/mobile/ Try Paramount+ free: https://paramountplus.com/?ftag=PPM-05-10aeh8h For video licensing inquiries, contact: [email protected]