Can you be charged for posting shit on the internet?
This seems to be basically what happened; their bots and whatnot posted 'propaganda' about HC on social media. Folk write crap on there every day, there's a million SJW's and whatnot making up shit and moaning about the world. If these Russians are charged and therefore fake likes, bots and posting untruths online is therefore a criminal act the internet could become a very different place