His letter to two senators about beatings by U.S. troops in Iraq led to legislation in 2005 prohibiting extreme mistreatment of military prisoners.
He embraced what became known as Black liberation theology and, in 1972, became the first Black leader of the National Council of Churches.
A champion of environmentalism who chided climate change, he was among the last of the relatively progressive Rockefeller Republicans.
During the Cold War, she fought for the rights of others and also waged a 16-year fight of her own for an exit visa to Israel. She finally won in 1987.