The annual nine-day Fiesta de San Fermin began in Spain this week. The festival, including the famous “Running of the Bulls,” attracts thousands of visitors to Pamplona every year. The festival kicks off with massive crowds at the Chupinazo in Pamplona town square, followed by a carnival, fireworks, the running of the bulls, and many bullfights. Held since 1591, San Fermin remains a popular, though dangerous and controversial, event.