How Russian trolls exploited Parkland shooting online -- PolitiFact

Russian-linked social media accounts exploited the tragedy at a Parkland, Fla., high school to sow discord and deepen divisions in America. Russian bots and trolls pushed conspiracy theories about survivors and amplified Second Amendment messaging in an apparent effort to undermine gun control advocacy. ....
http://www.politifact.com/truth-o-meter/article/2018/feb/22/how-russian-trolls-exploited-parkland-mass-shootin/