A flag flies in front of the grave of slain Ogoni leader Ken Saro-Wiwa in Bane, Khana district, in Rivers State, in 2010
A flag of the Movement for the Survival of the Ogoni People (MOSOP) flies in front of the grave of slain Ogoni leader Ken Saro-Wiwa in Bane, Khana district, in Rivers State, in 2010. The US Supreme Court heard arguments Tuesday in a lawsuit accusing Royal Dutch Shell of human rights abuses, a case that could make corporations liable for acts of torture or genocide overseas.