In response , RIC men drove in trucks into Croke Park ( Dublin 's GAA football and hurling ground ) during a football match , shooting into the crowd . Fourteen civilians were killed , including one of the players , Michael Hogan , and a further 65 people were wounded . Later that day two republican prisoners , Dick McKee , Peadar Clancy and an unassociated friend , Conor Clune who had been arrested with them , were killed in Dublin Castle . The official account was that the three men were shot " while trying to escape " , which was rejected by Irish nationalists , who were certain the men had been tortured then murdered . This day became known as Bloody Sunday
Bloody Sunday
Bloody Sunday (1920)
Irish War of Independence