How long? Please, God, how long?

Another group, aged five, seven and nine, tried to run away. The five-year-old fell down and was shot dead. Another boy stopped and told the attacker: “You killed this child. Please let me go.” It was no use. He too was killed, one of more than 20 children who died that day.

Local people in the Darfur region of Sudan put the number of dead in the attack earlier this month at 63, mostly old men and children. The African Union, which has a peacekeeping force in Darfur, said 92 people died in the eight villages attacked.

“They took the babies and children from their mothers’ arms, beat the women and shot the children,” said one witness, Adam Gamer Umar. “They said, ‘We’re killing your sons and when you have more we will come and kill them too’.”