KEY POINTS
  • Facebook has used these rules to train its "content reviewers" to decide whether to delete or allow posts.
  • They stand in sharp contrast to the United States' First Amendment protections of free speech, which courts have interpreted to allow exactly the sort of speech and writing censored by the company's hate speech algorithm.
Mark Zuckerberg, CEO of Facebook

In the wake of a terrorist attack in London earlier this month, a U.S. congressman wrote a Facebook post in which he called for the slaughter of "radicalized" Muslims. "Hunt them, identify them, and kill them," declared U.S. Rep. Clay Higgins, a Louisiana Republican. "Kill them all. For the sake of all that is good and righteous. Kill them all."

Higgins' plea for violent revenge went untouched by Facebook workers who scour the social network deleting offensive speech.