On May 21 throughout history, various notable events shaped history. From groundbreaking achievements in aviation to political and social upheavals, this date marks significant milestones. Some of the key events that occurred on May 21 include: the assassination of Rajiv Gandhi, the birth of nuclear physicist Andrey Sakharov, the founding of the American Red Cross, the Commune of Paris Revolt, the passing of Dame Barbara Cartland, and the first solo transatlantic flight by Amelia Earhart.