Bloody Sunday (1920)
Location central Dublin
Date 21 November 1920 early morning (GMT)
Attack type assassination
Weapon(s) revolvers, automatics
Death(s) 11 intelligence officers 2 Auxiliaries
Injured 1 IRA volunteer
Perpetrator Irish Republican Army
Location Croke Park, Dublin
Date 21 November 1920 15:25 (GMT)
Attack type indiscriminate shooting
Weapon(s) rifles, revolvers
Death(s) 14 civilians
Injured 60-70 civilians
Perpetrator Royal Irish Constabulary


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Bloody Sunday (1920)

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Bloody Sunday (Irish: Domhnach na Fola) was a day of violence in Dublin on 21 November 1920, during the Irish War of Independence. In total, 31 people were killed – fourteen British, fourteen Irish civilians and three republican prisoners.The day began with an Irish Republican Army (IRA) operation to assassinate the ‘Cairo Gang’, a team of undercover British agents working and living in Dublin. Twelve were British Army officers, one a member of the Royal Irish Constabulary and lastly a single civilian informant.Later that afternoon, the Royal Irish Constabulary opened fire on the crowd at a Gaelic football match in Croke Park, killing fourteen civilians. That evening, three IRA suspects in Dublin Castle were beaten and killed by their British captors, allegedly while trying to escape.


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Bloody Sunday was one of the most significant events to take place during the Irish War of Independence, which followed the formation of a unilaterally declared Irish Republic and its parliament, Dáil Éireann. The army of the republic, the Irish Republican Army waged a guerrilla war against the Royal Irish Constabulary (RIC), its auxiliary organisations and the British Army, who were tasked with suppressing Irish separatism. Some members of the Gaelic Athletic Association which owned Croke Park were confirmed Nationalists, but others were not.

In response to IRA actions, the British Government formed paramilitary forces to augment the RIC, the "Black and Tans" (a nickname possibly arising from their mixture of uniforms), and the Auxiliary Division (generally known as the Auxiliaries or Auxies). The behaviour of both groups immediately became controversial (one major critic was King George V) for their brutality and violence, not just towards IRA suspects and prisoners but towards Irish people in general. In Dublin, the war largely took the form of assassinations and reprisals on either side.

The events on the morning of 21 November were an effort by the IRA in Dublin, under Michael Collins and Richard Mulcahy to wipe out the British intelligence organisation in the city.

Collins's plan
Since 1919, Irish Finance Minister, head of the secretive Irish Republican Brotherhood and IRA Chief of Intelligence Michael Collins had operated a clandestine "Squad" of IRA members in Dublin, which was used to assassinate RIC and British Intelligence officers. By late 1920, British Intelligence in Dublin, including what was known as the 'Cairo Gang' (the nickname came from their patronage of the Cairo Cafe on Grafton Street and from their service in British military intelligence in Egypt and Palestine during the First World War), eighteen high-ranking British Intelligence officers, had established an extensive network of spies and informers around the city. Mulcahy, the IRA Chief of Staff, described it as, "a very dangerous and cleverly placed spy organisation".

In November 1920, Collins ordered the assassination of British agents around the city, judging that if they did not do this, the IRA's organisation in the capital would be in grave danger. The IRA was also of the opinion that a coordinated policy of assassination of leading republicans was being implemented by members of the security services.Dick McKee was put in charge of planning the operation. The addresses of the British agents were discovered from a variety of sources, including sympathetic housemaids, careless talk from some of the British, and an IRA informant in the RIC (Sergeant Mannix) based in Donnybrook barracks. On November 20, the assassination teams, which included the Squad and members of the IRA's Dublin Brigade, were briefed on their targets, who included 20 agents at eight different locations in Dublin. Collins's plan had been to kill over 50 British intelligence officers and informers, but the list was reduced to 35 on the insistence of Cathal Brugha, the Irish Minister for Defence, on the grounds that there was insufficient evidence against some of those named.

Bloody Sunday

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Plaque in memory of the three volunteers at Dublin Castle


Early on the morning of 21 November, the IRA teams mounted the operation. Most of the killings occurred within a small middle-class area of south inner-city Dublin, with the exception of one shooting at the Gresham Hotel on O'Connell Street. At 28 Upper Pembroke Street, four agents were killed. At 22 Lower Mount Street, one British officer was killed and another narrowly escaped. The building was surrounded by Auxiliaries, alerted by the firing, and in the ensuing gun fight two Auxiliaries were killed and one IRA man, Frank Teeling, was wounded and captured. Future Irish Taoiseach, Seán Lemass was involved in the killing of a Captain Bagely, also on Mount Street, while in two further incidents on the same street three more British agents were killed. Only a few streets away, further shootings took place on Baggot Street, Fitzwilliam Square, Morehampton Road and Earlsfort Terrace.

In all, 13 people were killed and 6 wounded, including suspected agents and those with no connection to politics, and two Auxiliaries. Four of the British casualties were military intelligence officers and another four were Secret Service or MI5 agents. Only one Squad member was captured, Frank Teeling, and he managed to quickly escape from gaol. One more IRA man was slightly wounded in the hand. However, out of the 35 people on Collins' hit list, only about a third had been killed. IRA man and future Irish politician, Todd Andrews recalled later, "the fact is that the majority of the IRA raids were abortive. The men sought were not in their digs or in several cases, the men looking for them bungled their jobs". Nevertheless the action terrified and crippled British intelligence in Ireland, causing many other agents and informers to flee for Dublin Castle, and caused consternation in the British administration.

Collins justified the killings in this way:


The Dublin Gaelic football team was scheduled to play the Tipperary team later the same day in Croke Park, the Gaelic Athletic Association's major football ground. Despite the general unease in Dublin as news broke of the killings, a war-weary populace continued with life. Approximately 5,000 spectators went to Croke Park for the Gaelic football match between Dublin and Tipperary, which began thirty minutes late, at 3:15 p.m.

Meanwhile, outside the Park, unseen by the crowd, British security forces were approaching and preparing to raid the match. A convoy of troops drove in from the northwest, along Clonliffe Road, while a convoy of police and Auxiliaries approached the Park from the south or Canal end. Their orders were to surround the grounds, guard the exits, and search every man in the Park. The authorities later stated that their intention was to announce by megaphone that all males leaving the stadium would be searched and that anyone leaving by other means would be shot. But for some reason, shots were fired as soon as the police convoy reached the stadium, at 3:25 p.m.

Some of the police later claimed that they were fired on first by IRA sentries, but this has never been proven. Correspondents for the Manchester Guardian and Britain's Daily News interviewed eyewitnesses, and concluded that the "IRA sentries" were actually ticket-sellers:

The police in the convoy's leading cars appear to have jumped out, pursued these men down the passage to the Canal End gate, forced their way through the turnstiles, and started firing rapidly with rifles and revolvers. Ireland's Freeman's Journal reported that,

The police kept shooting for about ninety seconds: their commander, Major Mills, later admitted that his men were "excited and out of hand." Some police fired into the fleeing crowd from the pitch, while others, outside the Park, opened fire from the Canal Bridge at spectators who climbed over the Canal End Wall trying to escape. At the other end of the Park, the soldiers on Clonliffe Road were startled first by the sound of the fusillade, then by the sight of panicked people fleeing the grounds. As the spectators streamed out, an armoured car on St James Avenue fired its machine guns over the heads of the crowd, trying to halt them.

By the time Major Mills got his men back under control, the police had fired 114 rounds of rifle ammunition, and an unknown amount of revolver ammunition as well, not counting 50 rounds fired from the machine guns in the armoured car outside the Park. Seven people had been shot to death, and five more had been fatally wounded; another two people had been trampled to death by the crowd. The dead included Jeannie Boyle, who had gone to the match with her fiancé and was due to be married five days later, and two boys aged 10 and 11. Two football players, Michael Hogan and Jim Egan, had been shot; Hogan was killed, but Egan survived, along with dozens of other wounded and injured. The police raiding party suffered no casualties.

Once the firing had been stopped, the security forces searched the remaining men in the crowd before letting them go. The military raiding party recovered one revolver: a local householder testified that a fleeing spectator had thrown it away in his garden. Once the grounds were cleared, the Park was searched for arms, but, according to Major Mills, none were found.

The actions of the police were officially unauthorised and were greeted with public horror by the Dublin Castle-based British authorities. In an effort to cover up the nature of the behaviour by Crown forces, a press release was issued which claimed:

The Times which during the war was a pro-Unionist publication, ridiculed Dublin Castle's version of events, as did a British Labour Party delegation visiting Ireland at the time. The British Brigadier Frank Crozier, technically in command that day, later resigned over what he believed was the official condoning of the unjustified actions of the Auxiliaries in Croke Park. One of his officers told him that, "Black and Tans fired into the crowd without any provocation whatsoever".

Two military courts of inquiry into the massacre were held, and one found that "the fire of the RIC was carried out without orders and exceeded the demands of the situation." Major-General Boyd, the officer commanding Dublin District, added that in his opinion, "the firing on the crowd was carried out without orders, was indiscriminate, and unjustifiable, with the exception of any shooting which took place inside the enclosure." The findings of these courts of inquiry were suppressed by the British Government, and only came to light in 2000.


Later that day, two high-ranking IRA officers, Dick McKee and Peadar Clancy, who had helped plan the killings of the British agents, together with another man, Conor Clune (a nephew of Patrick Clune, Archbishop of Perth, Australia), who were being held in Dublin Castle, were allegedly tortured, and then shot. Their captors said that, because there was no room in the cells, they were placed in a guardroom containing arms, and were killed while making a getaway.


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The behaviour of the Auxiliaries and the Black and Tans during the Irish War of Independence helped turn the Irish public against the Crown. Some British politicians[who?] and the King made no secret of their horror at the behaviour of Crown forces. The killings of men, women and children, both spectators and football players, made international headlines, damaging British credibility. However, in the short term, the IRA killings of British officers on the morning of the 21st received more attention in Britain. The bodies of nine of the British officers assassinated in Dublin were brought in procession through the streets of London for funerals at Westminster Abbey and Westminster Cathedral. When Joseph Devlin, an Irish Parliamentary Party MP, tried to bring up the Croke Park killings at Westminster, he was shouted down and a scuffle broke out in the parliament; the sitting had to be suspended.

A combination of the loss of the Cairo Gang, which devastated British Intelligence in Ireland, and the public relations disaster that was Bloody Sunday severely damaged the cause of British rule in Ireland and increased support for the republican government under Éamon de Valera. The events of Bloody Sunday have survived in public memory. The Gaelic Athletic Association named one of the stands in Croke Park the 'Hogan Stand' in memory of Michael Hogan, the football player killed in the incident.

James "Skankers" Ryan, who had informed on Clancy and McKee, was shot and killed by the IRA in February 1921.

IRA assassinations continued in Dublin for the remainder of the war, in addition to more large scale urban guerrilla actions by the Dublin Brigade. By the Spring of 1921, the British had rebuilt their Intelligence organisation in Dublin, and the IRA were planning another assassination attempt on British agents in the summer of that year. However, these plans were called off because of the Truce that ended the war on July 11, 1921.


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  • The Croke Park Massacre on the afternoon of Bloody Sunday is usually blamed on the Auxiliaries. While the police raiding party was composed in part of Temporary Cadets from Depot Company and commanded by an Auxiliary officer, Major Mills, eyewitness reports make it clear that ordinary police did most of the shooting at Croke Park.
  • The film Michael Collins shows an armoured car driving onto the pitch. This did not happen: the armoured car in question was outside the ground and seems to have fired into the air, rather than at the crowd. The director, Neil Jordan, later stated that he changed the scene because showing policemen do the shooting would have made it "too terrifying" for the film's tone.
  • It is often thought that two players were killed when accounts say two were shot. Hogan and Egan were both hit by bullets, but Egan survived his initial wounds only to die later in hospital.
  • It is sometimes claimed that British officers tossed a coin over whether they would go on a killing spree in Croke Park or loot Sackville Street (Dublin's main street, now called O'Connell Street) instead: see, for example, Ernie O'Malley, "Bloody Sunday," Dublin's Fighting Story 1916–1921 (Tralee: The Kerryman, 1949); but there is no evidence to support this claim.

See also

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  • List of massacres in Ireland

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