Bloody Sunday
Proper noun
Meaning
(historical) A 1905 event in St Petersburg in which as many as 4,000 unarmed citizens were killed by state forces.
(historical) Any of many similar events; see Bloody Sunday on Wikipedia for a complete list.
(historical, US) A 1965 event in Selma, Alabama, where peaceful civil rights protesters were brutally beaten by police.
(historical, Britain, Ireland) A 1972 event in Northern Ireland in which 13 civil rights protesters were shot and killed by a British Army regiment.
Source: en.wiktionary.orgExamples
A claim was made at the Saville Inquiry that McGuinness was responsible for supplying detonators for nail bombs on Bloody Sunday.
A former British paratrooper known to the public as Soldier F is on charges of murdering two people during the massacre known as Bloody Sunday in 1972, when British troops opened fire on unarmed Catholic demonstrators in Derry, killing 13 that day.
After Bloody Sunday many Catholics turned on the British army, seeing it no longer as their protector but as their enemy.
Bloody Sunday in Derry p. 123 Widgery acknowledged that a photograph taken seconds after Gilmour was hit corroborated witness reports that he was unarmed, and that tests for gunshot residue were negative.
Before serving in Congress, Lewis spent years as a pioneering activist in the civil rights movement, marching with Martin Luther King and nearly dying in the 1965 attack on marchers in Alabama known as Bloody Sunday.
Connaughton, p. 109, 342 Tsar Nicholas II elected to negotiate peace so he could concentrate on internal matters after the disaster of Bloody Sunday on 22 January 1905.