The majority of Miller's work early in his career was the documentation of strikes, protests and funerals which were manifestations of people's opposition to the apartheid regime and contributed to its eventual downfall.
[1] During the early 1990s, as the world witnessed the crumbling of the apartheid government, the subject matter of Miller's work changed from protests and funerals to the negotiations that would eventually lead to a democratic South Africa.
[1] After Nelson Mandela's release from prison in February 1990, Miller gained access to countries across Africa that had previously been closed to South African passport holders.
He has pursued photographic projects in 28 different countries including Botswana, Cuba, Democratic Republic of the Congo, Liberia, Namibia, Nigeria, Sierra Leone, Eritrea, Rwanda, Senegal, Sudan, Uganda, Vietnam and Zimbabwe.
His work reflects not only the internal chaos and violence caused by the genocide in Rwanda, but also the lasting effects for those who were forced to flee, and the problems faced by the neighbouring countries to which they fled.
[citation needed] During Miller's numerous visits to Uganda, he focused on the devastating effects of the war waged by Joseph Kony and the Lord's Resistance Army (LRA) on every sector of the population.
"[n 1] The work chronicles the strength of grandmothers in Khayelitsha township who have been forced by the consequences of the HIV/AIDS pandemic to unexpectedly become primary caregivers responsible for the raising of their grandchildren orphaned by HIV/AIDS.