In pictures: Iranian female motocross rider Behnaz Shafiei

Twenty-seven-year-old has become a symbol of the shifting social norms for women
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Iranian motorbike champion Behnaz Shafiei adjusts her helmet during a training session in Parand, southwest of Tehran. At 27, Shafiei has become a symbol of the shifting social norms for women in Iran, realising her dream of becoming a professional biker despite living in a country where she is not allowed to ride on public roads. (ATTA KENARE/AFP/Getty Images)
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Iranian motorbike champion Behnaz Shafiei rides her motorcycle during a training session in Parand, southwest of Tehran. (ATTA KENARE/AFP/Getty Images)
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At 27, Shafiei has become a symbol of the shifting social norms for women in Iran, realising her dream of becoming a professional biker despite living in a country where she is not allowed to ride on public roads. (ATTA KENARE/AFP/Getty Images)
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Iranian motorbike champion Behnaz Shafiei (R) rides her motorcycle during a training session in Parand, southwest of Tehran. (ATTA KENARE/AFP/Getty Images)
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Iranian motorbike champion Behnaz Shafiei poses next to her bike during a training session in Parand, southwest of Tehran. (ATTA KENARE/AFP/Getty Images)
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At 27, Shafiei has become a symbol of the shifting social norms for women in Iran, realising her dream of becoming a professional biker despite living in a country where she is not allowed to ride on public roads. (ATTA KENARE/AFP/Getty Images)
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Iranian motorbike champion Behnaz Shafiei (R) rides her motorcycle during a training session in Parand, southwest of Tehran. (ATTA KENARE/AFP/Getty Images)
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Iranian motorbike champion Behnaz Shafiei rides her motorcycle during a training session in Parand, southwest of Tehran. (ATTA KENARE/AFP/Getty Images)
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At 27, Shafiei has become a symbol of the shifting social norms for women in Iran, realising her dream of becoming a professional biker despite living in a country where she is not allowed to ride on public roads. (ATTA KENARE/AFP/Getty Images)
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Iranian motorbike champion Behnaz Shafiei poses during a training session in Parand, southwest of Tehran. (ATTA KENARE/AFP/Getty Images)