Despite its eclectic mix of cultures, Miami is one of the most racially segregated cities in the United States (remnants of the 6-foot-high 'race wall' are still visible today). Liberty Square and the surrounding Liberty City that grew up around it were a cultural hot-spot for famous black entertainers and public figures. Barred from the whites-only beach hotels, where they consistently sold out performances, world-class celebrities like Sammy Davis Jr., Nat King Cole, Ella Fitzgerald and Lena Horne had to stay in Liberty City hotels like the Hampton House. Martin Luther King Jr. delivered the first version of his “I Have a Dream” speech there and Malcolm X threw a victory party for Cassius Clay after he beat Sonny Liston in 1965.