Russia's disinformation campaign on Facebook could have been more widespread than we knew -- Business Insider

Before they capitalized on Facebook to promote fake news and divisive ads to the American public, and to organize anti-Clinton or pro-Trump rallies in different states, Russian trolls used the social-media platform to push out Ukrainian activists, The Daily Beast reported on Wednesday. ...
http://www.businessinsider.com/russia-trolls-facebook-ukraine-activists-disinformation-2017-9