Conversation so far:
What was Rubin Carter convicted of (the second time)?
While on a fund-raising trip together, Carolyn Kelley said Rubin Carter beat her severely over a disputed hotel bill.
What happened at the Lafayette Grill in 1966 regarding Rubin Carter?
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.
What was the charge brought against Rubin Carter?
Rubin Carter and John Artis were accused of entering the Lafayette Bar and Grill at East 18th Street at Lafayette Street in Paterson, New Jersey, and shooting up the place.
What was the sentence given to Rubin Carter?
Rubin Carter was sentenced to three consecutive life sentences.
Did Rubin Carter appeal?
In 1981, Rubin Carter's attorneys continued to appeal.
What happened during Rubin Carter's appeal?
John Artis was paroled in 1981. Rubin Carter's attorneys continued to appeal. In 1982, the Supreme Court of New Jersey affirmed his convictions.
Are there any other interesting aspects about this article, besides the incident at the Lafayette Bar and Grill, convictions, and appeals?
Rubin Carter's autobiography, titled The Sixteenth Round, written while he was in prison, was published in 1975 by Warner Books.

Question: What was the basis of this conclusion?
Self-contained rewrite: What was the basis of the jury's conclusion in Rubin Carter's trial?