(Steven Biko) (bē`kō), 1946–77, South African political leader. A medical student, he founded (1969) a black student organization and developed a national "black consciousness" movement to combat racism and apartheidapartheid [Afrik.,=apartness], system of racial segregation peculiar to the Republic of South Africa, the legal basis of which was largely repealed in 1991–92. History .....Click the link for more information. policies. Arrested in 1977, he died in police custody, prompting international protests and a UN arms embargo. In 1997 five former policemen admitted killing him.