In a unanimous decision, the state’s highest court found that Miller v. Alabama applies retroactively because it explicitly bans “the imposition of a certain category of punishment–mandatory life in prison without the possibility of parole–on a specific class of defendants: those individuals under the age of eighteen when they commit the crime of murder.” By applying Miller to all children sentenced to mandatory life imprisonment without parole, the court “ensures that juvenile homicide offenders do not face a punishment that our criminal law cannot constitutionally impose on them.”
In the same case, the Massachusetts court also held that any life without parole sentence imposed on a child, whether mandatory or discretionary, was unconstitutionally cruel and unusual under the Massachusetts Declaration of Rights. “Given current scientific research on adolescent brain development, and the myriad significant ways that this development impacts a juvenile’s personality and behavior,” the court concluded that when sentencing a child to prison a “judge cannot ascertain, with any reasonable degree of certainty, whether imposition of this most severe punishment is warranted.”
As a result, Gregory Diatchenko, who has served over 32 years for a murder committed when he was 17 years old, is now immediately eligible for parole consideration.
Massachusetts Governor Deval Patrick applauded the ruling in a public statement, noting that “Young people, even ones who commit terrible crimes, are developmentally and now constitutionally different from adults.”