(born 1941) Born in Greenville, South Carolina, Jackson became a member of Martin Luther King, Jr.’s inner-circle of advisers just prior to the latter’s assassination in 1968. Taking on the mantle of the Civil Rights movement and shifting it towards the economic and urban issues King had begun to embrace, he became executive director of Operation Breadbasket (1996–71), and then founder and national president of People United to Save Humanity (PUSH) from 1971–83. Popularizing the phrase “rainbow coalition” to describe his multi-ethnic and racial supporters, he ran for the Democratic presidential nomination in 1984, and then more successfully against Michael Dukakis in 1988, gaining significant influence at the Democratic Convention. During the Clinton presidency he was a key supporter of the administration during the impeachment crisis, was involved in diplomatic missions and has been one of the District of Columbia’s elected but non-voting “shadow” senators.