Who is Lungu from And They Didn't Die and what is their importance?

Lungu is Jezile's son. Lungu was conceived by rape. Lungu has nearly white skin and blond hair that is short and curly like an Africans. This causes Lungu to be something of an oddity in his village. Lungu is mistaken for a white child once by a white soldier and it causes him a great deal of shame. When Lungu is a teenager, he goes to a boarding school. One day Lungu is shot during a student protest. Lungu is left paralyzed. Despite this, Lungu continues his studies and becomes a doctor.