The organization began to target victims other than police and politicians, and to explode bombs in public places, often with advance warning so it could avoid casualties while still sending a message to the Spanish government. In July 1979, it activated more than a dozen bombs in Spanish luxury resorts and three in Madrid, including one at Barajas Airport, causing two deaths and multiple casualties. In 1980 ETA killed 94 people, its highest one-year total. A poll in the late 1970s by the magazine Cambio 16 showed that 53 percent of Spaniards were “seriously worried” about terrorism.