RA: War (Bob Marley)

“Until the philosophy which holds one race superior and another inferior is finally and permanently discredited and abandoned, everywhere is war and until there are no longer first-class and second-class citizens of any nation, until the color of a man's skin is of no more significance than the color of his eyes. And until the basic human rights are equally guaranteed to all without regard to race, there is war. And until that day, the dream of lasting peace, world citizenship, rule of international morality, will remain but a fleeting illusion to be pursued, but never attained... now everywhere is war. And until the ignoble and unhappy regimes that hold our brothers in Angola, in Mozambique, South Africa sub-human bondage Have been toppled, utterly destroyed Well, everywhere is war, me say war War in the east, war in the west War up north, war down south War, war, rumours of war And until that day, the African continent Will not know peace, we Africans will fight We find it necessary and we know we shall win As we are confident in the victory Of good over evil"

The audience of this song is Jamaican Rastafarians who want to be repatriated to Africa. They are the people who are hoping to someday return to Ethiopia, but are just waiting for the violence and oppression in Africa to end.
This song is an argument for tolerance and equality. The first half of the song is quoted from Haile Selassie I of Ethiopia. Marley gets a lot of credibility among the Rastafarians because they believe that Selassie was God incarnate. God carries a lot of credibility, especially when he is saying something that affects all Jamaicans. Racial inequality is what forced them to America in the first place, where they were left on a small island. Rastafarians see themselves as Africans, and so they feel strongly about the struggles of their fellow Africans. Marley appeals to ethos and pathos about evenly throughout this song. He also relies on logic when he quotes Selassie as saying, in effect "Until [x] there will always be war." He says that war naturally follows certain circumstances. It is caused by hatred and holding one person superior to another. These are things that hardly need proving for this audience.
His audience already agrees with him, but that's ok. He was trying to popularize Selassie's words so that eventually everyone would know the message. Marley's goal was not to convince Europeans and Americans to stop colonizing Africa or anything like that. His goal was to raise awareness in his own country and to fuel the Rastafarian movement. I think it worked pretty well.