Bull running in Pamplona

Revelers cover their faces after tear gas was released from an unknown source prior to the second bull run Photograph: Victor R Caivano/AP Photograph: Victor R Caivano/guardian.co.uk Revelers wait for the next run Photograph: Victor R Caivano/AP Photograph: Victor R Caivano/guardian.co.uk Revelers sleep in a park before the start of the run Photograph: Alvaro Barrientos/AP Photograph: Alvaro Barrientos/guardian.co.uk A participant falls while others scatter Photograph: Pedro Armestre/AFP/Getty Images Photograph: Pedro Armestre/guardian.co.uk Hundreds of 'mozos', or runners, walk through the streets of Pamplona at the end of the second run Photograph: Jesus Diges/EPA Photograph: Jesus Diges/guardian.co.uk A bull falls on a runner Photograph: Ander Gillenea/AFP/Getty Images Photograph: Ander Gillenea/guardian.co.uk Day one: People stand on balconies overlooking Estafeta street for the run of the Penajara ranch fighting bulls Photograph: Victor R. Caivano/AP Photograph: Victor R. Caivano/guardian.co.uk Crowds wait for the first run to begin Photograph: Ander Gillenea/AFP/Getty Images Photograph: Ander Gillenea/guardian.co.uk Fighting bulls and steers run round a corner Photograph: Denis Doyle/Getty Images Photograph: Denis Doyle/guardian.co.uk Crowds run through the streets of Pamplona Photograph: Alvaro Barrientos/AP Photograph: Alvaro Barrientos/guardian.co.uk A runner is caught by the horns of a fighting bull Photograph: Pedro Armestre/AFP/Getty Images Photograph: Pedro Armestre/guardian.co.uk The man is then trampled by the bulls Photograph: Pedro Armestre/AFP/Getty Images Photograph: Pedro Armestre/guardian.co.uk A boy from El Salvador watches the action from a balcony Photograph: Victor R. Caivano/AP Photograph: Victor R. Caivano/guardian.co.uk People stand in doorways as others run with the bulls Photograph: Alvaro Barrientos/AP Photograph: Alvaro Barrientos/guardian.co.uk Runners and bulls lose their footing on the cobbled streets Photograph: Vincent West/Reuters Photograph: Vincent West/guardian.co.uk The first run lasted two minutes and 23 seconds, the Navarra government press office said Photograph: Eloy Alonso/Reuters Photograph: Eloy Alonso/guardian.co.uk Fallen runners try to protect themselves from the bulls Photograph: Ana Castro/AP Photograph: Ana Castro/guardian.co.uk People attempt to dodge the bulls as they stampede past Photograph: Ander Gillenea/AFP/Getty Images Photograph: Ander Gillenea/guardian.co.uk A man is thrown in the bullring Photograph: Joseba Etxaburu/Reuters Photograph: Joseba Etxaburu/guardian.co.uk A runner gets tossed Photograph: Joseba Etxaburu/Reuters Photograph: Joseba Etxaburu/guardian.co.uk One of the cattle leaps over revellers in the bull ring Photograph: Joseba Etxaburu/Reuters Photograph: Joseba Etxaburu/guardian.co.uk People watch as a statue of San Fermin is carried through the streets during a procession in honour of the saint Photograph: Jesus Diges/EPA Photograph: Jesus Diges/guardian.co.uk