Social media companies give 'muted' response to surgeon generals call for warning labels

NBC News Chief Environmental Affairs Correspondent Anne Thompson joins Meet the Press NOW to explain why U.S. Surgeon General Vivek Murthy is calling for warning labels on social media platforms. » Subscribe to NBC News: NBC News Digital is a collection of innovative and powerful news brands that deliver compelling, diverse and engaging news stories. NBC News Digital features , , , Nightly News, Meet the Press, Dateline, and the existing apps and digital extensions of these respective properties. We deliver the best in breaking news, live video coverage, original journalism and segments from your favorite NBC News Shows. Connect with NBC News Online! Breaking News Alerts: Visit : Find NBC News on Facebook: Follow NBC News on Twitter: