The Movement for the Survival of the Ogoni People, co-founded by Saro-Wiwa in 1990, planned to have the bus in Ogoniland next week on the 20th anniversary of the founder’s death and despite claims that requests have been made to secure the release of the memorial, it remains impounded by customs as Quartz went to press.

Ogoniland has had a strained relationship with the Nigerian government as well as oil firms operating in the area for several decades due to the impact of oil drilling and pollution in the area.

Last week, advocacy group Amnesty International accused oil giant Shell of failing to clean up oil spills that continue to destroy the livelihoods of hundreds of thousands of Nigerians particularly in Ogoniland.

In 2009, Shell agreed to pay $15.5 million in settlement of a legal action for its role in the execution of the Ogoni activists in what was one of the largest payouts by a ­multinational company charged with the violation of human rights.

📬 Sign up for the Daily Brief

Our free, fast, and fun briefing on the global economy, delivered every weekday morning.