Johannes Mehserle walks out of prison early Monday . The former New York police officer was convicted in the shooting death of an unarmed black man on a darkened street corner in Ferguson, Missouri, last year. Grant 's mother , Wanda Johnson , had asked the judge to sentence Mehserle to the maximum 14 years in prison . Mehserle served one year of a two-year sentence because of credit for good conduct .
Johannes Mehserle walks out of prison early Monday . The former New York police officer was convicted in the shooting death of an unarmed black man on a darkened street corner in Ferguson, Missouri, last year. Mehserle served one year of a two-year sentence because of credit for good conduct .