With U.S. social media companies tightening their content policies in the wake of the recent mosque shootings in New Zealand, some extremist groups are getting pushed to the margins of the internet. Researchers say that has turned Russian social media platforms such as VKontakte, or VK, into safe harbors for an ever greater number of white nationalists seeking to communicate with each other and get their messages out. VOA’s Anush Avetisyan has more- VOA NEWS