South African <a href="https://en.wikipedia.org/wiki/Internal_resistance_to_apartheid" id="mwARQ" rel="mw:WikiLink" title="Internal resistance to apartheid">anti-apartheid activist</a> <a href="https://en.wikipedia.org/wiki/Steve_Biko" id="mwARU" rel="mw:WikiLink" title="Steve Biko">Steve Biko</a> dies in police custody.