Who is Handala?

In 1987, Palestinian cartoonist Naji Al-Ali was assassinated in London. The shooter was never caught. Naji created the famous figure Handala, a silent witness in his cartoons, in the form of a 10-year old boy with his back turned to the world. So powerful is this symbol, that 26 year after Naji's death, Handala lives on, as relevant now as it was then.