The protestor clashes with policemen. One sprays tear gas not 5 centimetres from his ear, while the other holds him in a tight grip. You have barely begun to acclimatize to the mood of the room — the undercurrent of rage and fear — when suddenly, you are confronted by bodies. Dead. Mostly children. On the street; in coffins; in ambulances; in pools of oil; and, in the World Press Photo of the Year by Swedish Paul Hansen, carried through the streets of Gaza in the arms of grieving uncles.