city of chicago, its future, and strength of the future, and no one person trumps my commitment and my responsibility to the city of chicago and its future. reporter: dash cam video of 2014 incident in which mcdonald was shot 16 times by police officer jason van dyke, inspired protests and calls for reform in a city struggling to curb gun violence. officer jason van dyke charged with first-degree murder before the video made public. monday, van dyke walked out of the jail, released on bond, the same day mccarthy appeared on local television to defend his handling of the indicate saying it was being handled by another investigative body. it s a very high-charged political atmosphere we re living in now. i couldn t fire him. i couldn t put him in no pay status. i couldn t discipline him. that s the law. it was not the chicago police department investigating this incident. reporter: chicago police also face intense scrutiny regarding