This question is based on selected poems from R. Johnson and D. Ker et al (eds.): New Poetry from Africa : Wole Soyinka (ed.): Poems of Black Africa; K.E. Senanu and T. Vincent (eds.): A selection of African Poetry and E.W.Parker (ed.): A Pageant of Longer Poems.
The most dominant pair of poetic device in Mtshall's 'Nightfall in Soweto'is