Africa: Are Western filmmakers entitled to tell Africa’s story?

“Why is it when people make films about Africa, they always show the bad parts of Africa?” Is an American with extensive world and filmmaking experience more capable of capturing realities on the African continent than a less-experienced African filmmaker? Is a South African filmmaker who has not left his country more credible to shoot a film in the Congo than a Westerner who has a career background in war-torn societies?