PAMPLONA, SPAIN - JULY 6: Revellers celebrate on the City Hall Square after the firing of the 'Chupinazo' (start rocket) which marked the official beginning of the Fiestas de San Fermin in Pamplona, Spain on 06 July 2016. The San Fermin Festival 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 Spain's most famous fiesta, the San Fermin bull-running festival. ( Burak Akbulut - Anadolu Agency )

PAMPLONA, SPAIN - JULY 6: Revellers celebrate on the City Hall Square after the firing of the 'Chupinazo' (start rocket) which marked the official beginning of the Fiestas de San Fermin in Pamplona, Spain on 06 July 2016. The San Fermin Festival 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 Spain's most famous fiesta, the San Fermin bull-running festival. ( Burak Akbulut - Anadolu Agency )

PAMPLONA, SPAIN - JULY 6: Revellers celebrate on the City Hall Square after the firing of the 'Chupinazo' (start rocket) which marked the official beginning of the Fiestas de San Fermin in Pamplona, Spain on 06 July 2016. The San Fermin Festival 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 Spain's most famous fiesta, the San Fermin bull-running festival. ( Burak Akbulut - Anadolu Agency )

PAMPLONA, SPAIN - JULY 6: Revellers celebrate on the City Hall Square after the firing of the 'Chupinazo' (start rocket) which marked the official beginning of the Fiestas de San Fermin in Pamplona, Spain on 06 July 2016. The San Fermin Festival 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 Spain's most famous fiesta, the San Fermin bull-running festival. ( Burak Akbulut - Anadolu Agency )

PAMPLONA, SPAIN - JULY 6: Revellers celebrate on the City Hall Square after the firing of the 'Chupinazo' (start rocket) which marked the official beginning of the Fiestas de San Fermin in Pamplona, Spain on 06 July 2016. The San Fermin Festival 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 Spain's most famous fiesta, the San Fermin bull-running festival. ( Burak Akbulut - Anadolu Agency )

PAMPLONA, SPAIN - JULY 6: Revellers celebrate on the City Hall Square after the firing of the 'Chupinazo' (start rocket) which marked the official beginning of the Fiestas de San Fermin in Pamplona, Spain on 06 July 2016. The San Fermin Festival 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 Spain's most famous fiesta, the San Fermin bull-running festival. ( Burak Akbulut - Anadolu Agency )

PAMPLONA, SPAIN - JULY 6: Revellers celebrate on the City Hall Square after the firing of the 'Chupinazo' (start rocket) which marked the official beginning of the Fiestas de San Fermin in Pamplona, Spain on 06 July 2016. The San Fermin Festival 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 Spain's most famous fiesta, the San Fermin bull-running festival. ( Burak Akbulut - Anadolu Agency )

PAMPLONA, SPAIN - JULY 6: Revellers celebrate on the City Hall Square after the firing of the 'Chupinazo' (start rocket) which marked the official beginning of the Fiestas de San Fermin in Pamplona, Spain on 06 July 2016. The San Fermin Festival 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 Spain's most famous fiesta, the San Fermin bull-running festival. ( Burak Akbulut - Anadolu Agency )

PAMPLONA, SPAIN - JULY 6: Revellers celebrate on the City Hall Square after the firing of the 'Chupinazo' (start rocket) which marked the official beginning of the Fiestas de San Fermin in Pamplona, Spain on 06 July 2016. The San Fermin Festival 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 Spain's most famous fiesta, the San Fermin bull-running festival. ( Burak Akbulut - Anadolu Agency )

PAMPLONA, SPAIN - JULY 6: Fake bulls on which lit torches and sparklers had been placed run through the streets after the first bull-run of the San Fermin Festival on July 06, 2016 in Pamplona, Spain. San Fermin Festival has become internationally known because of the running of the bulls, where the bulls are lead through the streets of the old quarter as far as the bull ring by runners. ( Burak Akbulut - Anadolu Agency )

PAMPLONA, SPAIN - JULY 6: Fake bulls on which lit torches and sparklers had been placed run through the streets after the first bull-run of the San Fermin Festival on July 06, 2016 in Pamplona, Spain. San Fermin Festival has become internationally known because of the running of the bulls, where the bulls are lead through the streets of the old quarter as far as the bull ring by runners. ( Burak Akbulut - Anadolu Agency )

PAMPLONA, SPAIN - JULY 6: Fake bulls on which lit torches and sparklers had been placed run through the streets after the first bull-run of the San Fermin Festival on July 06, 2016 in Pamplona, Spain. San Fermin Festival has become internationally known because of the running of the bulls, where the bulls are lead through the streets of the old quarter as far as the bull ring by runners. ( Burak Akbulut - Anadolu Agency )

PAMPLONA, SPAIN - JULY 07: Participants run with fighting bulls during the bull-run of the annual San Fermin Festival in Pamplona, Spain on July 07, 2016. The San Fermin Festival 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 Spain's most famous fiesta, the San Fermin bull-running festival. ( Burak Akbulut - Anadolu Agency )

PAMPLONA, SPAIN - JULY 07: Participants run with fighting bulls during the bull-run of the annual San Fermin Festival in Pamplona, Spain on July 07, 2016. The San Fermin Festival 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 Spain's most famous fiesta, the San Fermin bull-running festival. ( Burak Akbulut - Anadolu Agency )

PAMPLONA, SPAIN - JULY 07: Participants run with fighting bulls during the bull-run of the annual San Fermin Festival in Pamplona, Spain on July 07, 2016. The San Fermin Festival 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 Spain's most famous fiesta, the San Fermin bull-running festival. ( Burak Akbulut - Anadolu Agency )

PAMPLONA, SPAIN - JULY 07: Participants run with fighting bulls during the bull-run of the annual San Fermin Festival in Pamplona, Spain on July 07, 2016. The San Fermin Festival 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 Spain's most famous fiesta, the San Fermin bull-running festival. ( Burak Akbulut - Anadolu Agency )

PAMPLONA, SPAIN - JULY 07: Participants run with fighting bulls during the bull-run of the annual San Fermin Festival in Pamplona, Spain on July 07, 2016. The San Fermin Festival 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 Spain's most famous fiesta, the San Fermin bull-running festival. ( Burak Akbulut - Anadolu Agency )