'Kill them all' -- Russian-linked Facebook accounts called for violence

Facebook accounts run by Russian trolls repeatedly called for violence against different social and political groups in the U.S., including police officers, Black Lives Matter activists and undocumented immigrants. Posts from three now-removed Facebook groups created by the Russian Internet Research Agency suggest Russia sought not only to meddle in U.S. politics but to encourage ideologically opposed groups to act out violently against one another. The posts are part of a database compiled by Jonathan Albright, the research director at Columbia University's Tow Center for Digital Journalism, who tracks and analyzes Russian propaganda. For example, "Being Patriotic," a group that regularly posted content praising Donald Trump's candidacy, stated in an April 2016 post that Black Lives Matter activists who disrespected the American flag should be "be immediately shot." The account accrued about 200,000 followers before it was shut down. Another R...