Mbuyisa Makhubu became the most recognised face of the mass shooting of students by police on June 16 1976. The agonised figure of Mbuyisa, aged 18, appeared carrying the murdered Hector Pieterson in the iconic photograph taken by Sam Nzima. After the photograph was published around the world, Mbuyisa was forced to flee South Africa. He was given refuge in Nigeria, but disappeared in 1979, and his whereabouts remain unknown.