Riots in Belfast as demonstrations turn violent

Police remove nationalists blocking the Crumlin Road in the Ardoyne area of north Belfast during rioting. Peaceful protests and parades turned violent when night fell Photograph: Cathal McNaughton/Reuters Photograph: Cathal McNaughton/guardian.co.uk Protesters attack police in the Ardoyne area of north Belfast Photograph: Stephen Wilson/AFP/Getty Images Photograph: Stephen Wilson/guardian.co.uk Police remove a nationalist protester before an Orange Order march in north Belfast Photograph: Niall Carson/PA Photograph: Niall Carson/guardian.co.uk A youth throws a missile at a police cordon Photograph: Cathal McNaughton/Reuters Photograph: Cathal McNaughton/guardian.co.uk More than 80 police officers were injured Photograph: Cathal McNaughton/Reuters Photograph: Cathal McNaughton/guardian.co.uk A car explodes during clashes Photograph: Niall Carson/PA Photograph: Niall Carson/guardian.co.uk Masked youths wave their allegiance Photograph: Stephen Wilson/AFP/Getty Images Photograph: Stephen Wilson/guardian.co.uk The streets of the Ardoyne were ablaze Photograph: Stephen Wilson/AFP/Getty Images Photograph: Stephen Wilson/guardian.co.uk Senior police officers have demanded political action to stop the marching season descending into violence. A second night of rioting spread from Belfast to Derry Photograph: Niall Carson/PA Photograph: Niall Carson/guardian.co.uk Nationalist youths set cars alight Photograph: Cathal McNaughton/Reuters Photograph: Cathal McNaughton/guardian.co.uk A masked youth prepares to throw a petrol bomb at police in the Ardoyne area of north Belfast. Irish nationalist rioters wounded 82 police officers during two nights of street clashes sparked by the province's annual parades by the British Protestant majority Photograph: Liam McBurney/AP Irish nationalist rioters attack Police Service of Northern Ireland officers as they use a water cannon in north Belfast, 13 July Photograph: Liam McBurney/AP Irish nationalist rioters burn a hijacked car in the Ardoyne area of north Belfast, 13 July Photograph: Liam McBurney/AP