Grant was convicted in Wednesday of killing an unarmed man . The appeal to overturn the conviction was filed 2010 . It was argued in a court hearing on this week . Johannes Mehserle , a former San Francisco Bay Area transit police officer , is appealing his involuntary manslaughter conviction for the killing of 22-year-old Oscar Grant in Oakland . Johannes Mehserle 's family is angry that they were not informed about the hearing .
Grant was convicted in Wednesday of killing an unarmed man . The appeal to overturn the conviction was filed 2010 . It was argued in a court hearing on this week . Johannes Mehserle 's family is angry that they were not informed about the hearing .