In her suit, Ms. Jacobs argued that Facebook had become a breeding ground for extremist content and hosted groups that “openly advocated for violence, discussed tactical strategies, combat medicine and the merits of specific weapons, and shared information about building explosive devices.” The lawsuit also said the company’s recommendation algorithms attracted like-minded antigovernment extremists to these groups, including the men involved in the death of her brother.
The sergeant, Steven Carrillo, has been charged with murder and attempted murder, and the man he drove with to Oakland, Robert Justus, has been charged with aiding and abetting murder and attempted murder. Both have pleaded not guilty.
“We’ve banned more than 1,000 militarized social movements from our platform and work closely with experts to address the broader issue of internet radicalization,” Andy Stone, a Meta spokesman, said in a statement. “These claims are without legal basis.”
Militarized social movements continue to have a presence on Meta’s platforms. On Thursday, one such organization ran ads on Instagram, Meta’s popular photo-sharing platform, to recruit members for “a grass-roots movement that pursues readying individual militiamen.” The group’s account was later removed, the company said.