Stephen Gault, whose father Samuel was killed in the Troubles, has accused Northern Ireland's Attorney General of trying to "airbrush" murdered people out of history.
"How dare he airbrush the innocent people who were murdered at the hands of terrorists to move things forward," he said.
Mr Gault survived the 1987 IRA Poppy Day bombing in Enniskillen in Co Fermanagh, but his father was among the 11 people killed.
He said he found the proposal to end any future prosecutions relating to that period "totally, totally disgusting".
More top news
David Cameron hasn't repeated his migrant 'swarm' comment since his interview with ITV News, but he's likely to be reminded of it.
Breaking Bad fans can relive the adventures of Walter White - only with no actual drugs - thanks to a new novelty café in Turkey.
Migrants desperate to reach Britain from Calais have told how making the dangerous journey is their "last chance".