Google Leaks: Efforts to address "Fake News"
A slidedeck from December 2016 showing Google and it's plan to impose it's politics on the ad-exchanges supplying revenue for news media organizations.
Google: "We've updated our publisher policies and will start prohibiting Google ads from being placed on misrepresentative content, just as we disallow misrepresentation in our ads policies. Moving forward, we will restrict ad serving on pages that misrpepresent, misstate, or conceal information about the publisher, the publisher's content, or the primary purpose of the web property."
Part of the full Google Disclosure, which you can see here.