Can talking stop hatred? On 13 November 2015, gunmen killed more than 100 people at a rock concert in Paris. Georges Salines lost his daughter, but kept his hope and gained a friend.
Incredible friendship healing Bataclan wounds
Shared tragedy: Both Azdyne Amimour (left) and Georges Salines (right) lost a child in the 2015 attacks. Glossary
Martin Luther King - The civil rights leader was shot dead in Tennessee in 1968.