Ikeda's meetings with Nelson Mandela in the 1990s led to a series of SGI-sponsored anti-apartheid lectures, a traveling exhibit, and multiple student exchange programs at the university level. Their October 1990 meeting in Tokyo led to collaboration with the African National Congress and the United Nations Apartheid Center on an anti-apartheid exhibit inaugurated in Yokohama, Japan "on the 15th anniversary of the Soweto uprisings (16 June 1976)."