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Since 2002 the organization People for the Ethical Treatment of Animals (PETA) has staged a protest the d ay before the San fermin festival in Pamplona, Spain. In a mockery of the world famous spectacle of fighting Bulls chasing crowds of runners, semi nude animal rights activist are running through town following the same route. Under the slogan "Join the Human Race" PETA is trying to draw attention to the plight of the bulls, who after the run are killed the same evening in the Bullfighting arena. Reactions from the people of Pamplona are mixed, from anger to amusement at the spectacle. The Naked Run is becoming part of the festival and thousands of spectators line the route to cheer or heckle the demonstrators, depending on their own opinions on the subject. The following images are from 2004. 

source : www.photosbybjorn.com