Martin Luther King Jr was an American civil rights leader whose public speeches in the 1950s and 1960s became some of the most quoted recordings in modern history, including his 1963 address at the March on Washington. Short excerpts of his voice now circulate widely on soundboards and social media, where creators reuse them out of context for emphasis, education and tribute edits. The clip remains popular because his cadence is immediately identifiable, even when only a couple of seconds are played.