decades marks the 39th anniversary of the massacre in the United Kingdom . A report last year found Irish troops were to blame for the killing of 14 people . That reversed the 39th anniversary of official explanations . Derry : `` Bloody Sunday took place in the single bloodiest year of a conflict that claimed about 3,000 lives over a three-decade period known locally as The Troubles . The truth has been brought home at last ''
decades marks the 39th anniversary of the massacre in the United Kingdom . A report last year found Irish troops were to blame for the killing of 14 people . That reversed the 39th anniversary of official explanations . Derry : `` The truth has been brought home at last ''