Former Juvenile Offender Warren Harris Jr. Granted Release after Decades in Prison due to Changing Legal Standards on Life Sentences for Minors

Can you summarize Warren Harris Jr.’s story in a few sentences? I want to understand his background, the crimes he committed as a teenager, and how he has been working on rehabilitation since being incarcerated at Louisiana State Penitentiary. Also, can you provide more details about the recent US Supreme Court decisions that led to Harris’ release through parole hearings?