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and killing a black teenager. y jason van dyke, the white chicago police officer who shot 17-year-old laquan mcdonald to death in october of last year is facing first-degree murder charges tonight. just a short time ago, chicago mayor rahm emanuel and chicago police superintendent garry mccarthy pleaded for calm. >> people have a right to protest, people have a right to free speech, but they do not have a right to make criminal acts. >> and joining us now is the "hardball" roundtable, april ryan is white house correspondent for american urban radio networks. sabrina siddiqui is a reporter for the guardian. here in new york, we have ari melber. you've been following this very closely. let me start with you. what do we know on the terms of the timing of all of this. i know there was a court order that the video had to be out by tomorrow. some people look at this and say, what i do this at night if you could have waited until tomorrow morning?
toxicology report and what we keep getting back, anderson, is that it's just going to take some time. >>y jason, thanks. joining me is a -- studied heroin use and addiction for decades. a former undercover d.e.a. agent and police consultant. rick, the heroin that you find here in no, nobody knows more about heroin in new york than you do. you've been studying this for a long time. you and i went out to heroin shooting galleries in the late 90s. it's not just heroin. what is mixed in it? >> who knows? there's many different things mixed in it, including inert ingredients, ingredients that have some effect on the users. but most of the dealers don't actually know what's in it. >> and the purity of it, is it very pure? >> that varies considerably as well. in targets the dealers, it's to their advantage to vary the purity to maximize their profits.
the autopsy report, about the toxicology report and what we keep getting back, anderson, is that it's just going to take some time. >>y jason, thanks. joining me is a -- studied heroin use and addiction for decades. a former undercover d.e.a. agent and police consultant. rick, the heroin that you find here in no, nobody knows more about heroin in new york than you do. you've been studying this for a long time. you and i went out to heroin shooting galleries in the late 90s. it's not just heroin. what is mixed in it? >> who knows? there's many different things mixed in it, including inert ingredients, ingredients that have some effect on the users. but most of the dealers don't actually know what's in it. >> and the purity of it, is it very pure? >> that varies considerably as well. in targets the dealers, it's to their advantage to vary the purity to maximize their
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