In this Jan. 29, 2004, file photo, former boxer Rubin "Hurricane" Carter holds up the writ of habeas corpus that freed him from prison during a news conference held in Sacramento, Calif. Carter, who spent almost 20 years in jail after twice being convicted of a triple murder he denied committing, died at his home in Toronto, Sunday, April 20, 2014, according to long-time friend and co-accused John Artis. He was 76.

Rich Pedroncelli / AP File

In this Jan. 29, 2004, file photo, former boxer Rubin "Hurricane" Carter holds up the writ of habeas corpus that freed him from prison during a news conference held in Sacramento, Calif. Carter, who spent almost 20 years in jail after twice being convicted of a triple murder he denied committing, died at his home in Toronto, Sunday, April 20, 2014, according to long-time friend and co-accused John Artis. He was 76.