Americans should be more concerned about their privacy being invaded by the spread of drones, Justice Sonia Sotomayor told an Oklahoma City audience on Thursday.

Speaking before a group of faculty members and students at Oklahoma City University's law school on Sept. 11, Justice Sotomayor said "frightening" changes in surveillance technology should encourage citizens to take a more active role in the privacy debate. She said she's particularly troubled by the potential for commercial and government drones to compromise...