Conversation so far:
When did Rubin Carter start boxing?
After his release from prison in September 1961, Rubin Carter became a professional boxer.
Why was Rubin Carter in prison?
In 1966, police arrested Rubin Carter and friend John Artis for a triple homicide committed at the Lafayette Bar and Grill in Paterson, New Jersey.

Question: Who did he fight?
Self-contained rewrite: Who did Rubin Carter fight?