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Riots erupt in Northern Ireland

Peter Morrison / AP

Riot police come under attack from a petrol bomb thrown by Nationalist rioters in the Ardoyne area of North Belfast, Northern Ireland on July 12, 2012.

July 12 is the busiest day of the marching season in Northern Ireland. Thousands of Orangemen and women, accompanied by marching bands, held their main Belfast event commemorating King William III's 1690 Battle of the Boyne victory over Catholic King James II. The tradition is seen as provocation by Irish nationalists who want to be part of a united Ireland. Police fired water cannon at Catholic youths in Belfast after rioting erupted. Read more here

Cathal Mcnaughton / Reuters

Nationalist youths clash with riot police in the Ardoyne area of North Belfast, Northern Ireland on July 12, 2012.

Peter Morrison / AP

Nationalist rioters hold the Irish flag as they face riot police in the Ardoyne area of North Belfast, Northern Ireland on July 12, 2012.

Peter Morrison / AP

Nationalist residents shout at police as an Orange Order parade passes the Ardyone area of North Belfast, Northern Ireland on July 12, 2012.

Peter Morrison / AP

Protestant bandsmen march past the mainly Catholic Ardyone area of North Belfast, Northern Ireland on July 12, 2012.

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