This event is popularly known as 'The Battle of The Bogside'. This was a large-scale communal riot that took place in Derry, between the 12 and 14 August 1969. The fighting was between residents of the Bogside area (allied under the Derry Citizens' Defence Association) and the Royal Ulster Constabulary (RUC). The rioting erupted after the RUC attempted to disperse nationalists who were protesting against a loyalist Apprentice Boys parade along the city walls, past the nationalist Bogside area. The Apprentice Boys of Derry hold two main parades during the year. One parade is held in December, commemorating the closing of the gates by the original Apprentice Boys on 7th December 1688. The December event is popularly known as Lundy's Day, because an effigy of Lundy is set on fire at dusk. Another parade is held in August, celebrating the relief of the city at the end of the siege, on 1st August 1689. Because of the change in the calendar in 1752, the anniversaries have moved by eleven days to 18th December and 12th August. The parades are now held on Saturdays close to these anniversary dates.