</p> Michael Lenahan, 23, of Philadelphia, Pennsylvania, is gored in the leg during the annual running of the bulls at the Fiesta Los San Fermines in Pamplona, Spain. Rampaging bulls gored seven people Thursday, injuring three seriously, in the festival's longest and most dangerous bull run yet. The festival, held since 1591, attracts tens of thousands of foreign visitors each year for nine days of revelry, morning bull runs and afternoon bullfights. It gained worldwide fame in Ernest Hemingway's 1926 novel The Sun </p>