This is a guest post from Dr. Sybille Reinke de Buitrago, who is a Researcher and Project Manager of “VIDEOSTAR – Video-based Strategies Against Radicalization” at PolAk Nds, the Academy of Police Science and Criminology, Germany. Her research focuses on processes of identity, perception, emotions and discourse in security policy and international relations. With the multitude of ‘stuff’ anyone can say online, why does it matter what someone says? It depends. When it comes to extremists posting content, we should be concerned, because spreading hatred online can incite actual violence....