The justices took up an appeal by the parents and other relatives of Nohemi Gonzalez, a 23-year-old woman from California who was studying in Paris, of a lower court's ruling that cleared Google LLC-owned YouTube of wrongdoing in a lawsuit seeking monetary damages that the family brought under a U.S. anti-terrorism law.Republicans painted it as a tool for censorship of voices on the right, especially after Twitter and other platforms banned then-President Donald Trump from after a mob of his supporters attacked the U.S. Capitol in a deadly riot on Jan. 6, 2021.The plaintiffs said that YouTube's algorithm helped Islamic State spread its militant message by recommending to users the group's videos including those aimed at recruiting jihadist fighters, and that the company's "assistance" was a cause of the 2015 attacks.Gonzalez's family appealed the 9th Circuit ruling to the Supreme Court, noting that while algorithms may suggest benign dance videos to some, "other recommendations suggest that users look at materials inciting dangerous, criminal or self-destructive behavior."In the case against Twitter, American family members of Nawras Alassaf, a Jordanian citizen who died in a nightclub mass shooting in 2017 in Istanbul also claimed by Islamic State, accused that social media company of violating the anti-terrorism law by failing to police the platform for Islamic State accounts or posts."