"We still have a long road to travel until we reach the world that was his dream. We in the United States must not forget either his supreme sacrifice or that dream."⁠ Sleevenotes from Stevie Wonder's 1980 LP, 'Hotter Than July', which featured 'Happy Birthday', a celebration of the life of Dr. Martin Luther King Jr. Released as a single, the song became an anthem in the campaign to have the legacy of the civil rights activist recognised with a US national holiday.⁠ Now marked across the nation on the third Monday in January, close to King's birthday, calls for an MLK Day began just four days after his assassination in 1968, led by Democrat congressman John Conyers.⁠ Initially rejected, Conyers persisted, introducing the same bill to Congress each year and supported by a national campaign led by King's widow, activist Coretta Scott King. She is pictured here with her husband in Montgomery, Alabama, in the late 1950s.⁠ In 1983, 20 years after MLK had told the March on Washington "I have...