Four decades ago, America began observing a federal holiday that nearly didn't happen. Martin Luther King Jr. Day took years of activism and strategic pressure to become reality. Stevie Wonder began advocating for the holiday in 1980. He composed his song "Happy Birthday" as a call to action that challenged Americans to honor a man who sacrificed everything for equality. Wonder emphasized that the movement was for “all of those who have lived and died for the principles of peace and unity and equality for all people.”⁠ ⁠ The song became the soundtrack to large Washington rallies where tens of thousands demanded congressional action. Wonder confronted political resistance head-on, and he reframed the conversation around shared values rather than partisan divides: “We must be the united people of the United States.”⁠ ⁠ President Reagan signed the bill in 1983. It was a moment when artistry and activism worked together to transform the national calendar. Wonder insisted that this wasn't j...