If you think there are Russian trolls here, then you're already drunk in paranoia. However, it is certainty that there are many paid USA propaganda posters in these comments sections. That the USA does pay people to each use multiple fake online personas, to make propaganda posts in social media "around the world" is established fact.
https://www.theguardian.com/technology/2011/mar/17/us-spy-operation-social-networks
https://www.theguardian.com/commentisfree/cifamerica/2011/mar/17/us-internet-morals-clumsy-spammer
http://www.reuters.com/article/us-election-intelligence-commentary-idUSKCN10F1H5
http://www.businessinsider.com/ndaa-legalizes-propaganda-2012-5