SOCCERArsenal, Tottenham fans clash ahead of North London DerbyPolice intervene in clashes between Arsenal and Tottenham fans.Chris J Ratcliffe, AFP/Getty ImagesFans clash as Arsenal supporters are escorted by police past Tottenham fans.Chris J Ratcliffe, AFP/Getty ImagesPolice intervene in clashes between Arsenal and Tottenham fans.Chris J Ratcliffe, AFP/Getty ImagesPolice intervene in clashes between Arsenal and Tottenham fans.Chris J Ratcliffe, AFP/Getty ImagesPolice intervene in clashes between Arsenal and Tottenham fans.Chris J Ratcliffe, AFP/Getty ImagesPolice prepare to intervene in clashes between Arsenal and Tottenham fans.Chris J Ratcliffe, AFP/Getty ImagesMounted policemen prepare to intervene during clashes between Arsenal and Tottenham fans.Chris J Ratcliffe, AFP/Getty Images