4. Muhammad Ali dies at 74

After a decades-long struggle with Parkinson’s disease, Muhammad Ali died on June 3 at the age of 74. The three-time heavyweight champion was a figure of international significance far beyond boxing, an individual whose controversial stand against the Vietnam War and lifelong efforts as a humanitarian and advocate for justice touched the lives of millions. On June 10, following a memorial service and motorcade viewed by thousands, the Greatest was laid to rest in his native Louisville. — Richard O'Brien

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