Theres a few different views about Rubin Carter its worth researching online.

A decent fighter in tough area with formidable stable mates.

This man Ron Lipton - Wikipedia, the free encyclopedia
Used to post on one Old school forum that went private 'Cyber' and also has utube vids up as he trains fighters still in the old way.
If you can engage him in conversation about Rubin it will bring you back into focus (about whats been portrayed in the media and through Bob Dylans song etc, and it leaves you somewhat questioning.
So do the statements of the witnesses that were there that night and the police report on cars in the area etc, its not a cut and dried set up.