Major technology companies including Apple, Facebook and YouTube deleted years of content from conservative conspiracy theorist Alex Jones and his Infowars platforms over allegations of hate speech.
The sudden clampdownis fuelling the growing debate over how big technology companies choose to censor.
The move was unusual for its sweep and speed, suggesting a new assertiveness by technology companies that in the past have worked to avoid alienating conservatives, who often assert that left-leaning Silicon Valley is biased against them. The removals appeared to be prompted by more users flagging Infowars content for policy violations.
Jones' shows long have sparked complaints because of many elaborate and unsupported claims, including that mass shootings such as the 2012 massacre at Sandy Hook Elementary may have been staged and that the government orchestrated the September 11 attacks. In July, YouTube banned one of his videos from June entitled "How to Prevent Liberalism," which depicts a man shoving a kid to the ground.
But in acting against Jones in recent days, the technology companies cited unspecified violations of their rules against hateful language. Facebook said in a statement it was removing four of Jones' pages "for glorifying violence, which violates our graphic violence policy, and using dehumanising language to describe people who are transgender, Muslims and immigrants, which violates our hate speech policies."