Welded found metal objects (recyclia)
"Sometimes we blame people for things they haven't done when we should be blaming ourselves. Like the British have had lots of involvement with Zimbabwe in the past, but very little to do with it now. We Zimbabweans have inflicted our own present, and future, on ourselves."
The spear suggests the parallels between individual self-harm and how Danny feels the Zimbabweans have created their own difficult situation.
Height measurement is approximate.