At the early Olympic Games athletes travelled safely during 100 days' truce. Make a film, add a message. Pass it on to people who won't be in peace at 2012.
The Lord's Resistance Army (LRA) is a rebel movement which originated in northern Uganda in the 1980s. They fought the Ugandan National Army, but also carried out brutal attacks against ordinary people, and abducted thousands of school children, who were used as slaves or forced to fight.
Odokh David was just ten when the LRA abducted him from his village in Northern Uganda. "They said that I must be one of them. I was terrified. I didn't want to go with them but because of fear I had to accept it."
Odokh was 'trained' for three days with other children, using sticks shaped like guns. Then they were divided into fighting groups. He says, "they told us we might be attacked at any time. If someone got shot it was my job to pick up the gun."
"If they saw you were a good fighter you were made to abduct others. There was nothing I could do, I had to follow orders to survive."
The LRA made Odokh fight in Uganda and Sudan. Eventually escaped, but it took time to readjust. "At first people called me names and I felt very out of place. But when I got home I felt better. All I wanted to do was see my mother and father but my father had already died and my brother too. I have seen too much killing."
CAFOD's partner, Caritas Gulu, has been supporting people like Odokh, offering them counselling and reuniting them with their families. With help, Odokh is rebuilding his life, and is coming to terms with the horrors of his childhood. He is 21 now, and lives in Luzira village, with his wife and three children.
César is a member of the Battalion of Immediate Artistic Reaction, a group of musicians and activists seeking alternatives to violence in Colombia's capital, Bogoté. Whenever there's violence in the city, they head out to the streets to play music about peace.
"We use music as a tool for transformation," says César. "We work with communities, prisons and young people from gangs. Our songs are about their experiences."
César's guitar is a modified AK47 gun - part of a stash of weapons confiscated from rebel groups. The army removed their firing mechanisms and handed them to the United Nations.
The idea of making guitars from guns came after a bombing incident in which 36 people died and 100 were injured. César and his colleagues had rushed out to start playing, but a soldier used his gun to stop them. Now, César's gun-guitars symbolise finding alternatives to violence.
CAFOD's partner CINEP has supported César in releasing an album. He says, "When I started writing my album, I asked CINEP to assist me with their knowledge and vision. Every song comes with a download explaining the issue with figures, maps and statistics. Each song tackles an important issue: violence against women, compensation for victims, child soldiers... It's called 'every bullet is lost'."
"There are many theories about improving peace: redistribute land, improve education and health. But none of these tackle the fear, the guilt, the anger. Music is a fundamental tool to reach the emotions. We need to learn to deactivate the weapon inside us."
Marie Munyanshongre Muhire and her family used to live in DRC. But in 1994, after the Rwandan genocide, millions of Hutus crossed over the border into DRC. Some joined rebel groups and began to attack DRC's population of ethnic Tutsis. The violence made DRC's political situation unstable and caused tension and fighting between Rwandan and Congolese forces.
The conflict in their area forced Marie's family to cross the border into Rwanda. There, they started rebuilding their lives. CAFOD's partner, CDJP Nyundo helped them, through counselling and reconciliation activities. It also runs a 'peace house', which brings different communities together, and Marie's sister Esther started taking Peace Studies.
But when Esther met a man from DRC and wanted to marry him, her parents couldn't approve of the marriage. The emotional scars from the conflict ran deep. They had been badly treated by the rebel groups in DRC, and didn't trust Congolese people.
Esther asked her sister for help, and Marie talked to their parents. Both sisters wanted to help their parents move on from the conflicts of the past. "When I talked to my parents, I convinced them that we are all one human race. We need to move on and leave peacefully together," says Marie.
Eventually, Esther's parents gave their approval to the marriage, and the couple were married this year.
People like Marie are helping their communities to take big steps forward. For Marie, love isn't about boundaries, and it's not about race or background. Instead it has the healing force of peace. Communities which have previously been in a state of war and conflict, are learning to trust each other again, and to live in peace and acceptance.
On 10th May 2008, Margaret and Barry Mizen's son Jimmy went out with his brother to buy his first lottery ticket. It was the morning after his sixteenth birthday.
A few minutes later he was dead.
In a South London bakery his unprovoked attacker challenged the brothers to step outside. When they refused, he became violent. They tried to close the shop door but he smashed it with a pavement sign, grabbed a glass dish and smashed it into Jimmy's throat. Terrified, Jimmy dragged himself into a cupboard. Another brother Tommy arrived moments later, but Jimmy died in his arms.
Jimmy was the thirteenth London teenager to be killed that year. Yet Margaret and Barry say: "We would like everyone to remember Jimmy and all those killed by violent crimes, not in anger, but with hope for the future."
Their faith is helping. Margaret and Barry are bringing good out of bad. They visit schools, churches, politicians and police chiefs. They speak to young prisoners often desperate for forgiveness and a change of life. What they seek is not revenge, but the rejection of all violence. This message is at the heart of Pax Christi, the International Catholic peace movement.
Margaret and Barry have exchanged their stories of peace-building with young people who are challenging violence in the Kenya slums where CAFOD works.
Margaret says: "In Jimmy's words, 'you don't need to like everybody, but you should respect them.' Stand up and be proud of your faith. Never let go of it."
Lumbac is an area of the Philippines torn by decades of conflict. It's home to Muslims and Christians, indigenous people and settlers; but disputes over land and farming rights have caused violent conflict and many people have had to leave their homes.
Conflict is passed on between down the generations. There is widespread poverty, as people have lost their homes and spent their money trying to get justice.
Many parents can't afford for their children to go to school. Many don't have enough food, or essential medicine. The conflicts that force people to leave home separate them from their neighbourhood friends. So do old prejudices and disagreements.
CAFOD's partner ECOWEB works with communities in Lumbac. They don't take sides. They just bring people together, encouraging them to find peaceful solutions.
ECOWEB approaches peace in creative ways. They've made a peace garden where people can come together, and find accommodation for families who lost their homes. They run a 'Sports for Peace' programme, providing space and equipment for young people from different backgrounds to come together and make friends. Through sports and games, friendships flourish. And while participants enjoy the games, they're learning tolerance and respect along the way.
"Our activities for young people and children may not directly solve the conflict," says Nannette from ECOWEB. "But we believe this could really help stop the cycle of violence. Children and young people haven't caused the conflict, but they're deeply affected by it. It's not just about bridging relationships between different groups for now; it's about hope for the future - so future generations will be able to stop the violence they're living through."