I think source 2 is referring to the situation in Darfur. In Darfur there are two main types of people. Darfur, a region in Western Sudan roughly the size of Texas, is widely recognized as one of the worst humanitarian crises today. The smaller Nomadic tribes and the larger community of black farmers (also a small group). The Nomadic Tribes are mostly Arabs. There was aggression between the two groups long before there was an established government. The Government was favouring the Nomadic Tribes over the farmers, so this favoritism caused even more violence. There was violence because the rebels were attacking the government institutions, so that provoked more hostility between the Arabs and the farmers. There is no remedy for this problem