Massachusetts teens sentenced to life without parole reveal inequities in '96 law

U.S. Supreme Court will revisit sentencing children 14-years and younger to life in prison without parole

Cases involve 14-year-olds with life without parole for killings; in one case, unarmed boy didn't shoot victim, but law required sentence

A Supreme Court decision means thousands will be eligible to get hearings for new sentences for crimes committed as minors.

Massachusetts moves cautiously toward reform.