In the month since war began between Israel and Hamas, social media has been taken over with images and stories of attacks, many of which proved false. For example, within hours of Hamas’ surprise attack on October 7, screen grabs from a popular video game were shared by thousands of social media users as if depicting real scenes of violence against Israeli troops in Gaza. Five days later, a real explosion at a hospital in Gaza spurred further sharing of such spurious images to buttress various claims and counterclaims about responsibility for the casualties. It’s not just this war. Over...