https://www.theverge.com/2018/9/6/17829188/twitter-permanently-suspension-infowars-alex-jones

Twitter just permanently suspended Infowars and Alex Jones, a full month after companies like Apple, Facebook, and YouTube removed the conspiracy theorist and his blog from their platforms. Twitter said that the Infowars creator had violated its “abusive behavior” rules.

Twitter at last deemed Jones went too far after he tweeted a video of himself confronting a CNN reporter, calling him an equivalent of “the Hitler Youth” and using other disturbing imagery to disparage him.