s who have worked for me but critics were claiming that the new conviction integrity unit was just a political move by charles hynes to help his reelection bid as district attorney a lot of observers in a new york criminal justice system feud the conviction integrity unit as a smokescreen that in fact there wasn't leading to a huge amount of reform within that office i don't believe that we should have innocent men being convicted for murders that they did not commit hines's opponent ken thompson campaigned on the wrongful conviction claims piling up on the d.a.'s desk at the end of an era brooklyn district attorney charles hynes who has been in office for more than two decades. and in two thousand and thirteen thompson made history by becoming the first candidate to defeat an incumbent one hundred years. he promised to speed up the wrongful conviction tied to detective. parolee derek hamilton hopes that thompson will keep his promise. for two decades derek hamilton has been fighting to overturn his guilty verdict for the murder of the fan you'll cash in brooklyn hamilton says he was

his hopes rest in the hands of the philadelphia district attorney and his new conviction integrity unit reviewing the case. >>> still ahead tonight, deadly takedown, the family of a man that died after an encounter with police files a wrongful death lawsuit. did officers use excessive force? >>> also, what was he thinking? the man in trouble with the law for this wild face-off at yellowstone. >>> we're back with the video shedding light in a deadly police incident. it shows officers in louisiana serving a warrant and it turns violent and when it was over, a man was dead. the officers are not facing charges but they are facing a lawsuit. nbc's joe fryer has the story and let me warn you, the video is disturbing. >> reporter: this newly released body cam video that shows officers struggling with a louisiana man is at the center of a civil wrongful death suit. 44-year-old armando frank died shortly after the encounter. >> it was compile or die that day and he died. >> reporter: it happened in louisiana. >> coming on down, talk to us >> reporter: in the video provided by the frank family at