Social media platforms have been one of the principal means by which right-wing extremist ideas and hate speech have been shared and promulgated , leading to extensive debate about the limits of free speech and its impact on terrorist action and hate crimes . In 2018 , researchers in the US identified the YouTube recommendation system as promoting a range of political positions from mainstream libertarianism and conservatism to overt white nationalism . Many other online discussion groups and forums are used for online right-wing radicalization . Robert Bowers the perpetrator of the Pittsburgh synagogue shooting at Tree of Life - Or L'Simcha Congregation in Pittsburgh , Pennsylvania was a regular verified user on Gab a " free speech " alternative to Twitter and spread anti-Semitic , neo-Nazi and Holocauat denial propaganda as well as interacting or reposting 5 alt-right figures : Brad " Hunter Wallace " Griffin of '' Occidental Dissent '' and League of the South ( LS ) , Daniel " Jack Corbin " McMahon a self-described " Antifa Hunter " " fascist " , former California Republican Patrick Little , Jared Wyand of Project Purge and Daniel " Grandpa Lampshade " Kenneth Jeffreys of '' The Daily Stormer '' and '' Radio Aryan '' . Twitter was found to be offering advertisements targeted to 168,000 users in a white genocide conspiracy theory category , which they removed shortly after being contacted by journalists in the wake of the Pittsburgh synagogue shooting . After a Brooklyn synagogue was vandalized with death threats , the term " Kill all Jews " was listed as a trending topic on Twitter
Pittsburgh synagogue shooting
Pittsburgh synagogue shooting
Right-wing terrorism