Human rights defender Ken Saro-Wiwa was executed, along with eight other members of the Ogoni people, by the Nigerian State on 10 November 1995. They were convicted for murder and sentenced to death following a trial that failed to meet international standards. Ken Saro-Wiwa carried out a long-term campaign against oil pollution in the oil rich Niger Delta by Royal Dutch Shell.

Ken Saro-Wiwa's widow talks about execution 20 years on (Al Jazeera)