On November 10, it was 20 years since Ken Saro-Wiwa, president of the Movement for the Survival of the Ogoni People (MOSOP), and eight other Ogoni leaders were hanged by Nigaria's military dictatorship in Nigeria.
Known as the Ogoni Nine, their crime was demanding a share of the proceeds of oil exploitation.
The Niger Delta covers a huge area of some 27,000 square miles on Nigeria’s southern coast. Once almost all tropical rainforest, it has one of the highest levels of biodiversity on earth and is home to 31 million people. Ogoniland comprises 400 square miles in the eastern delta.