It's 20 years ago this week since the death of 3 year old Jonathan Ball and 12 year old Tim Parry in the Warrington Bombings.
There were those who called for revenge and retaliation against those responsible and their supporters. But one family has led a single-minded fight for peace and reconciliation ever since.
Colin Parry had to switch off his son Tim's life support machine in the days after the attack. We went with him to the Northern Ireland Assembly to meet political leaders, some of whom openly supported the IRA back in 1993.
From Belfast, our correspondent Ashley Derricott reports
Just before 12:30 this lunchtime, the town of Warrington fell silent. People put their busy day on hold, to remember the victims of two IRA bombs, detonated within a minute of each other, 20 years ago today.
Three-year-old Johnathan Ball died at the scene. Tim Parry, who was 12, died of his injuries five days later. Another 56 people were hurt.
As hundreds paused this afternoon, they were urged to look forward with hope rather than back with anger.
Warrington fell silent this lunchtime to mark 20 years since two IRA bombs went off in the town centre.
Two boys were killed after the terrorist attack and 56 people were injured. Caroline Wareham reports.
David Cameron has praised the parents of a victim of the IRA Warrington bombing in their pursuit for peace.
Tim Parry died along with Jonathan Ball following the Bridge Street blast. A minutes silence was held at 12:27 the time it went off to mark the 20th anniversary.
Following the blast Colin and Wendy Parry set up a Peace Centre in the town to try and resolve conflicts between various groups.
Today the Prime Minister said:
"When you suffer a tragedy like this it must be so much easier to try and forget about it but to go on and campaign for peace and to bring together the people of Warrington shows enormous character and fortitude and they have the backing of the whole county."
A minute's silence will be held today at 12:27pm, exactly twenty years since the Warrington bombing.
Twelve-year-old Tim Parry was killed in the blast along with three-year-old Johnathan Ball.
Tim's parents, Colin and Wendy, will be hosting a conference at their centre today on the subject of 'The Cost of Peace & The Price of Extremism'.
The parents of Tim Parry, one of the boys killed in the IRA bomb blast in Warrington will address the Northern Ireland assembley today on the eve of the 20th anniversary.
Colin and Wendy Parry have campaigned for Peace and set up The Tim Parry Jonathan Ball Foundation for Peace in memory of Tim and three-year-old Johnathan Ball.
They inspired the development of an international Peace Centre delivering programmes to support victims of political violence and to work to challenge extremism and those who support acts of terrorism.
Colin and Wendy Parry, whose son Tim died in the Warrington bombing, have joined hundreds of people for a moving ceremony.
Warrington fell silent today to mark the 20th anniversary of the murder of two boys in an IRA outrage.
20 peace doves were released at a moving civic event to commemorate the Warrington bombing, which tore through the town's shopping centre, instantly killing three-year-old Johnathan Ball.
Tim Parry, 12, became the second victim when he died of his injuries five days later.
A further 56 people were injured by the two bombs which were placed in litter bins in Bridge Street and exploded shortly after midday that sunny Saturday afternoon.
No warning was given and nobody has ever been prosecuted for the outrage which took place the day before Mothering Sunday.
Today's event on the same street where the bombs detonated was held to commemorate one of the Trouble's most shocking attacks.
Tim Parry's parents Colin and Wendy stood near the spot where their son was fatally injured for the moment of reflection.
Hundreds of people have gathered in Warrington to hold a minute's silence to remember the victims of the Warrington bombing 20 years ago.