Why is Steve Biko's remarkable legacy often overlooked?

Matthew Graham is lecturer in history at the University of Dundee. The views expressed in this commentary are solely those of the writer. CNN is showcasing the work of The Conversation, a collaboration between journalists and academics to provide news analysis and commentary. The content is produced solely by The Conversation.

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(CNN)While Nelson Mandela, Oliver Tambo, and Desmond Tutu are rightly venerated for their role in opposing and ending white minority rule in South Africa, another leader of the liberation years has been remarkably overlooked: Bantu Steven Biko, who led the enormously influential Black Consciousness Movement. Four decades after his death in police custody on September 12 1977, he deserves to be recognized as one of the towering heroes of the anti-apartheid struggle.