A few years ago a publicity campaign for a late-night cartoon show backfired when it aroused fears of a terrorist attack and temporarily shut down the city of Boston. The effort consisted of one-foot-tall blinking electronic signs with hanging wires and batteries that marketers used to promote the Cartoon Network TV show Aqua Teen Hunger Force (a surreal series about a talking milkshake, a box of fries, and a meatball). The signs were placed on bridges and in other high-profile spots in several US cities. Most depicted a boxy, cartoon character giving passersby the finger. The bomb squads and other police personnel required to investigate the mysterious boxes cost the city of Boston more than $500,000—and a lot of frayed nerves. Is there a line between attention-getting pubicity stunts and activities that should be illegal or forbidden?