Revelers celebrate during the launch of the “Chupinazo” rocket, to celebrate the official opening of the 2015 San Fermin Fiestas, in Pamplona, northern Spain, Monday, July 6, 2015. Revelers from around the world kick off the festival with a messy party in the Pamplona town square, one day before the first of eight days of the running of the bulls glorified by Ernest Hemingway's 1926 novel “The Sun Also Rises”. (Photo by Alvaro Barrientos/AP Photo)
