They destroyed the cities first, which made sense. The noise, light, and material pollution invaded their dens. Hearing a dragon cough is bowel-freezing, heart-stopping. They snort freaking fire! This is how they razed the cities, breathed fire onto them until they were ashes. No more pollution. It was a purge the ruralites cheered.
Last week, the second purge took the small towns. Prevention? Nobody knows. But we’re staying on our farms and practicing total self-sufficiency.