When people see Customs & Border Protection's giant, tethered surveillance blimp flying 20 miles outside of Marfa, Texas, lots of them confuse it with an art installation. Elsewhere along the U.S.-Mexico border, surveillance towers get mistaken for cell-phone towers. And that traffic barrel? It's actually a camera. That piece of...

War does not only reshape borders. It also reshapes what can be seen, said, and remembered. When governments invoke “misinformation” during wartime, they often mean something simpler: speech they do not control. Since the escalation of conflict between the United States, Israel, Iran, and related spillover attacks in the Gulf,...