Leon refers to Leon Trotsky, a prominent figure in the Russian Revolution. He was a Marxist revolutionary and theorist who played a key role in establishing the Soviet Union. Trotsky was a leader of the Bolshevik Party and a close associate of Vladimir Lenin during the early stages of the revolution. However, he later became a rival to Joseph Stalin and was ultimately exiled and assassinated in 1940.
Note: The provided meaning of the answer is for the latest New York Times crossword puzzle clue: R&B singer Bridges. Explanations are generated by AI and may be inaccurate.