Wondering

I sometimes wonder why Bobby and Bruce are still rotting away in prison.
FROM http://www.cdcr.ca.gov/Parole/Life_Parole_Process/Index.html

Lifer Parole Process Parole Hearings

Only inmates sentenced to life in prison(Indeterminate Sentenced), with the possibility of parole, are subject to suitability hearings by the BPH.

Some life inmates are sentenced without the possibility of parole. All prison inmates in California who are not serving life sentences (known as Determinate Sentences) are released on parole after serving the sentence imposed by the court and are supervised by the Dept. of Corrections and Rehabilitation.

Inmates serving life sentences become eligible for parole hearings automatically, one year prior to their minimum eligible parole date (MEPD). Being scheduled for a parole hearing is no indication of the inmate’s suitability for release from prison.

Whether inmates are found suitable for parole is a judgment of the BPH hearing panel. These inmates are sentenced to the possibility of parole, not the assurance of it, recognizing that their maximum potential sentence is life. It is not uncommon for inmates to receive many parole hearings before they are found suitable for release. By law, inmates can be found unsuitable for parole for the following denial lengths: 15, 10, 3, 5 or 7 years. Suitability criteria Parole hearings are not to decide guilt or innocence. The BPH accepts as fact the guilty verdict imposed by the courts.

I assume the paragraph below contains one or more reasons Bobby and Bruce are still incarcerated. Maybe they have not complied with ALL the conditions.

The purpose of a parole hearing is to determine if or when an inmate can be returned to society. Under normal circumstances, the panel or the Board shall set a release date unless it determines that the gravity of the crime (offense), or the timing and gravity of current or past convictions, requires a more lengthy period of incarceration to ensure public safety. In general, some of the factors considered by the panel and which are discussed in the hearing include:counseling reports and psychological evaluations behavior in prison (ie, disciplinary notices or laudatory accomplishments) vocational and educational accomplishments in prison involvement in self-help therapy programs that can range from anti-addiction programs for drugs and alcohol to anger management parole plans, including where an inmate would live and support themselves if they were released.

Some say they are political prisoners. I looked up the definition of "political prisoner." political  prisoner- noun

A person who has been imprisoned for holding or advocating dissenting political views.

Are the Manson crimes political views?