Usually they have a story about a miracle. Normally Juan Valdez has seen the likeness of the Virgin of Guadeloupe in his tortillas, or in a water stain on a rock, or a portrait is crying real tears. Word gets around. Thousands of people come to look. The press follows.
Miracles seem to be all over the place, like ticks on a summer cow.
They just flat gum up the grocery-rack tabloids. Most religions have miracles. India's a regular mass market in miracles. Ancient Rome had so many they had to store them in warehouses. Then you have secular miracles, like Elvis sightings, UFOs that do weird examinations of hysterical spinsters, magical pyramids that sharpen razor blades, mutilated cattle, funny-looking space aliens with bulgy grey heads that the Air Force stores in New Mexico, and crop circles.