In the third film it is youth, both inside and outside South Africa, who next joined the growing movement against apartheid. Buoyed by new support in Western countries, Oliver Tambo returned to the United Nations to try to convince the world body to sanction South Africa. His efforts gained new public support as the brutal suppression of a youth uprising in the South African township of Soweto and the controversial death of Steve Biko turned South Africa from a country into a cause, a worldwide emblem of injustice. In 1977 a significant victory was won when the United Nations issued a mandatory arms embargo: the first in history. But South Africa's strongest trading partners in the West still would not sanction it economically, and as Tambo headed to Zambia to minister to the African National Congress' growing guerrilla army, a bloodbath seemed inevitable. But even as the most powerful western governments refused to heed Tambo's calls for cultural and economic boycotts, the citizens of those western nations would help turn the tide.