A conference takes place in Dublin later today bringing together many different families who all believe their relatives or friends were murdered by British state forces in collusion with loyalists.
Among those taking part are relatives of the Dublin/Monaghan bombings, the family of murdered Belfast solicitor, Pat Finucane and the Bloody Sunday Justice Campaign.
"This is an opportunity to give relatives a voice", said Robert McLenaghan, whose grandfather died in the McGurk's bar bombing of 1971, in which fifteen people died.
"Collusionists have affected many families over many years. The Dublin conference hopefully will give those families a chance to raise the issue in the capital city of Ireland."