The British Army killed 14 people in Derry, Ireland, on Bloody Sunday in 1972.

“As with many other tragedies in our history, the system frustrated the desire of families to get at the truth,” Bishop Donal McKeown of Derry preached at the 50th anniversary Mass. “Blatant lies were told … People are crushed when institutions or organizations lie to preserve their reputation. We still have much truth to discover about many other deaths.”