Major rioting and civil disorder break out in Ardoyne, north Belfast, Northern Ireland, on July 12, 2001. In some of the worst rioting in years, 113 police officers are injured in clashes which follow a July 12 parade. Police are attacked when trying clear the path for about 100 Orangemen returning from the parade to go along a main road passing the Catholic Ardoyne area.

In the seven-hour riot which involves about 250 nationalist youth, two blast bombs and 263 petrol bombs are exploded, while a dozen vehicles are hijacked, and 48 plastic bullets are shot by the police. Riot police also use water cannons. There are also incidents in east Belfast, Derry and Ballycastle, but the clashes in Ardoyne are by far the most serious.

The rioting comes just weeks after loyalist rioting in the area during the Holy Cross dispute.

The Royal Ulster Constabulary (RUC) says the riots are orchestrated by the Provisional Irish Republican Army, a claim denied by Sinn Féin, who believe the RUC’s heavy response escalates tensions. The incident also intensifies a row over the use of plastic bullets. Forty-eight of them are fired by the RUC in Ardoyne, and Sinn Féin claims fifty of them hit civilians, ten of which are badly injured. Chief Constable Ronnie Flanagan strongly rejects calls from the Northern Ireland Human Rights Commission (NIHRC) to halt its use in riots. Nationalist politicians see the ban on plastic bullets as a vital reform to make Catholics trust the police force more. Gerry Kelly from Sinn Féin says that the RUC “started the riot in Ardoyne. They are a sectarian force, using a very lethal weapon predominantly against nationalists and they should not be allowed to do so.”

A few days later another riot breaks out involving petrol bombs and acid being thrown by loyalists at police in north and west Belfast. Loyalists claim shots are fired at them from the Catholic Short Strand. A buffer zone is created by riot police in North Queen Street. Well-known Ulster Defence Association (UDA) members are spotted. From September 2001 the area sees fresh violence during the Holy Cross dispute and on the 23rd, with rioting also occurring in October and November.