Lawyers representing Facebook and Twitter revealed that Russian groups on their social networks tried to delegitimize Donald Trump’s presidency after the election.

Politico reports that lawyers from Facebook and Twitter told a Senate Judiciary panel on Tuesday that Russian-linked agents on their social networks following election day in November 2016 attempted to undermine President Trump’s victory. Facebook general counsel Colin Stretch outlined to the Senate Judiciary panel how a Russian trolling group known as the Internet Research Agency generated content after November 8th focusing on “fomenting discord about the validity of…