Criticism of Hillary Clinton over documents posted by Wikileaks played a key role in her failed US presidential campaign and successful election of Donald Trump, a study of viral tweets has found. Twitter posts during the final two months of the 2016 election race shows Clinton was much more heavily criticised on social media compared with her rival Donald Trump. Posts relating to Wikileaks were the most common form of attack on social media for the Democratic candidate, who was also heavily criticised on Twitter over an FBI investigation into her use of a private email server, researchers said. Researchers from the University of Edinburgh in the UK used computer analysis to study the top viral tweets each day between September 1 and November 8 last year.