Effects of bloody Sunday .
Bloody Sunday was an incident on 30 January 1972 in the Bogside area of Derry, Northern Ireland, in which 26 unarmed civil-rights protesters civilians were shot by soldiers of the British Army.The incident occurred during a Northern Ireland Civil Rights Association march. In the late 1960s discrimination against the Catholic minority in electoral boundaries, voting rights, and the allocation of public housing led organisations such as Northern Ireland Civil Rights Association (NICRA) to mount a non-violent campaign for change.