The Rev. Jesse Jackson, whose impassioned oratory and populist vision of a "rainbow coalition" of the poor and forgotten made him the nation's most influential Black figure in the years between the civil rights crusades of the Rev. Dr. Martin Luther King Jr. and the election of Barack Obama, died on Tuesday. He was 84.

His death was confirmed by his family in a statement, which said that Mr. Jackson "died peacefully" but did not give a cause or say where he died.

Mr. Jackson was hospitalized in November for treatment of a rare and particularly severe neurodegenerative condition, progressive supranuclear palsy (PSP), according to the advocacy organization he founded, the Rainbow PUSH Coalition. In 2017, he announced that he had Parkinson's disease, which in its early stages can produce similar effects on bodily movements and speech.