30 January 1972, in the Bogside area of Derry, Northern Ireland, British soldiers shot 26 unarmed civilians during a protest march against internment without trial.
SUNDAY,BLOODY SUNDAY

’Sunday,Bloody Sunday’ on YouTube    https://www.youtube.com/results?search_query=+SundayBloody+Sunday
Wikipedia: Bloody Sunday(1972)    https://en.wikipedia.org/wiki/Bloody_Sunday_(1972)
Link to Felipa's post below about  SUNDAY,BLOODY SUNDAY