In this May 1, 2016 photo, spectators are covered with foam that was sprayed by a team competing in the costume event, at the annual donkey fair in Otumba, Mexico state, Mexico. The annual donkey fair in Otumba attracts up to 40,000 people who come to see the animals compete in costumes and race around a track with jockeys on their backs. (Photo by Rebecca Blackwell/AP Photo)
