Northern Ireland marks 50 years since the Bloody Sunday killings
British soldiers shot and killed 13 people and wounded others during a 1972 civil rights protest. The shootings exacerbated the conflict in Northern Ireland, which left thousands dead over decades.
Locals in the city called either Londonderry or Derry, Northern Ireland, are marking 50 years since Bloody Sunday, in which British soldiers fired upon a crowd of protesters in what's now considered one of the most pivotal events
