Runners sprint ahead of bulls during the first running of the bulls at the San Fermin festival in Pamplona, northern Spain, July 7, 2017. (Photo by Susana Vera/Reuters)





A woman lifts up her shirt during the Chupinazo, the official start of the San Fermin festival in Pamplona, Spain July 6, 2017. (Photo by Vincent West/Reuters)





A runner summersaults during the first running of the bulls at the San Fermin festival in Pamplona, northern Spain, July 7, 2017. (Photo by Eloy Alonso/Reuters)





Runners sprint ahead of bulls during the first running of the bulls at the San Fermin festival in Pamplona, northern Spain, July 7, 2017. (Photo by Susana Vera/Reuters)





Giant-headed figures, known as Kilikis, parade on the street on Saint Fermin's day at the San Fermin festival in Pamplona, northern Spain, July 7, 2017. (Photo by Vincent West/Reuters)





A girl laughs in front of a “cabezudo” (big head) during San Fermin's “Comparsa de gigantes y cabezudos” (Parade of the giants and the big heads) in Pamplona, northern Spain, July 7, 2017. (Photo by Eloy Alonso/Reuters)





Two revellers douse themselves with wine as they celebrate the “Chupinazo” (start rocket) to mark the kickoff at noon sharp of the San Fermin Festival, in front of the Town Hall of Pamplona, northern Spain, on July 6, 2017. A red-and-white sea of revellers soaked each other with wine in a packed Pamplona square today to kick off Spain's most famous fiesta, the San Fermin bull-running festival. (Photo by Cesar Manso/AFP Photo)





Cebada Gago's fighting bulls jump over a runner on the first day of the San Fermin bull run festival in Pamplona, northern Spain on July 8, 2017. Each day at 8:00 am hundreds of people race with six bulls, charging along a winding, 848.6-metre (more than half a mile) course through narrow streets to the city's bull ring, where the animals are killed in a bullfight or corrida, during this festival, immortalised in Ernest Hemingway's 1926 novel “The Sun Also Rises” and dating back to medieval times and also featuring religious processions, folk dancing, concerts and round-the-clock drinking. (Photo by Cesar Manso/AFP Photo)





A participant is tossed by a Cebada Gago fighting bull on the first day of the San Fermin bull run festival in Pamplona, northern Spain on July 7, 2017. (Photo by Ander Gillenea/AFP Photo)





A reveller shows her breasts as she celebrates the “Chupinazo” (start rocket) to mark the kickoff at noon sharp of the San Fermin Festival, in front of the Town Hall of Pamplona, northern Spain, on July 6, 2017. (Photo by Ander Gillenea/AFP Photo)





Samantha Kane Gale, an American who lives in Paris and has been attending the Fiesta de San Fermin ten times, has sangria poured on her as the Festival of San Fermin 2017 begins in Pamplona, Spain, 06 July 2017. The festival, locally known as Sanfermines, is held annually from 06 to 14 July in commemoration of the city's patron saint. Hundreds of thousands of visitors from all over the world attend the fiesta. Many of them physically participate in the highlight event – the running of the bulls, or encierro – where they attempt to outrun the bulls along a route through the narrow streets of the old city. (Photo by Jim Hollander/EPA)





A reveller catches beer thrown from a balcony during the opening day or “Chupinazo” of the San Fermin Running of the Bulls fiesta on July 6, 2017 in Pamplona, Spain. The annual Fiesta de San Fermin, made famous by the 1926 novel of US writer Ernest Hemmingway entitled “The Sun Also Rises”, involves the daily running of the bulls through the historic heart of Pamplona to the bull ring. (Photo by Pablo Blazquez Dominguez/Getty Images)





A reveller is tossed by other participants as they celebrate the “Chupinazo” (start rocket) to mark the kickoff at noon sharp of the San Fermin Festival, in front of the Town Hall of Pamplona, northern Spain, on July 6, 2017. A red-and-white sea of revelers soaked each other with wine in a packed Pamplona square today to kick off Spain's most famous fiesta, the San Fermin bull-running festival. (Photo by Miguel Riopa/AFP Photo)





Revellers hold up red scarves during the Chupinazo, the official start of the San Fermin festival in Pamplona, Spain on July 6, 2017. (Photo by Eloy Alonso/Reuters)





A reveller catches wine thrown from a balcony during the opening day or “Chupinazo” of the San Fermin Running of the Bulls fiesta on July 6, 2017 in Pamplona, Spain. The annual Fiesta de San Fermin, made famous by the 1926 novel of US writer Ernest Hemmingway entitled “The Sun Also Rises”, involves the daily running of the bulls through the historic heart of Pamplona to the bull ring. (Photo by Pablo Blazquez Dominguez/Getty Images)





A reveller spits wine as they celebrate the “Chupinazo” (start rocket) to mark the kickoff at noon sharp of the San Fermin Festival, in front of the Town Hall of Pamplona, northern Spain, on July 6, 2017. A red-and-white sea of revelers soaked each other with wine in a packed Pamplona square today to kick off Spain's most famous fiesta, the San Fermin bull-running festival. (Photo by Ander Gillenea/AFP Photo)





Revelers celebrate during the “Chupinazo” (start rocket) to mark the kickoff at noon sharp of the San Fermin Festival, in front of the Town Hall of Pamplona, northern Spain, on July 6, 2017. (Photo by Miguel Riopa/AFP Photo)





Participants celebrate the “Chupinazo” (start rocket) to mark the kickoff at noon sharp of the San Fermin Festival, in front of the Town Hall of Pamplona, northern Spain, on July 6, 2017. (Photo by Miguel Riopa/AFP Photo)





A pig-shape balloon is held up among participants holding red scarves as they celebrate the “Chupinazo” (start rocket) to mark the kickoff at noon sharp of the San Fermin Festival, in front of the Town Hall of Pamplona, northern Spain, on July 6, 2017. (Photo by Miguel Riopa/AFP Photo)





revelers are soaked with water poured from balconies as they celebrate the “Chupinazo” (start rocket) to mark the kickoff at noon sharp of the San Fermin Festival, in front of the Town Hall of Pamplona, northern Spain, on July 6, 2017. (Photo by Cesar Manso/AFP Photo)





A reveller catches wine thrown from a balcony during the opening day or “Chupinazo” of the San Fermin Running of the Bulls fiesta on July 6, 2017 in Pamplona, Spain. (Photo by Pablo Blazquez Dominguez/Getty Images)





A reveller jumps from a fountain at Navarreria Street as people enjoy the atmosphere during the opening day or “Chupinazo” of the San Fermin Running of the Bulls fiesta on July 6, 2017 in Pamplona, Spain. (Photo by Pablo Blazquez Dominguez/Getty Images)





Participants celebrate the “Chupinazo” (start rocket) to mark the kickoff at noon sharp of the San Fermin Festival, in front of the Town Hall of Pamplona, northern Spain, on July 6, 2017. (Photo by Miguel Riopa/AFP Photo)





A reveller shows her breasts as she celebrates the “Chupinazo” (start rocket) to mark the kickoff at noon sharp of the San Fermin Festival, in front of the Town Hall of Pamplona, northern Spain, on July 6, 2017. (Photo by Ander Gillenea/AFP Photo)





A reveller cools off with water thrown from a balcony during the start of the San Fermin festival in Pamplona, Spain on July 6, 2017. (Photo by Eloy Alonso/Reuters)