“Savvas Zannettou at Cyprus University of Technology and his colleagues set up an account on Gab, then cross-checked posts against terms in Hatebase, a database used by governments and non-governmental organisations to track the spread of hate speech. One in every 20 posts the researchers analysed included words in the Hatebase corpus ”“ 2.4 times the rate on Twitter. However, hate-filled posts on Gab were only half as common as on 4chan”s /pol/ message board, a notorious home of internet trolls.”
https://www.newscientist.com/article/2161933-theres-an-alt-right-alt-twitter-and-its-filled-with-hate/
https://www.newscientist.com/article/2161933-theres-an-alt-right-alt-twitter-and-its-filled-with-hate/