Twitter, Google, Facebook Defeat Suit Over San Bernadino Attack

Twitter Inc., Google LLC, and Facebook Inc. aren’t liable for allegedly playing a role in a December 2015 terrorist shooting in San Bernardino, Calif., a federal district court ruled.

Web platform operators, including social media companies, generally aren’t liable for content posted by their users. But here the plaintiffs alleged Twitter, Google, and Facebook created “unique content” by combining ISIS postings with advertisements targeted to the postings’ viewers.

The companies didn’t provide material support to the Islamic State of Iraq and Syria as the families of victims and the massacre’s survivors claimed, the U.S. District Court for the Northern ...