But first, lets try to go out to chicago as we await a press conference there. Were not quite ready to go to Tammy Leitner yet, but we are awaiting a press conference that should be happening momentarily. Authorities in chicago expected to talk about this video they released at noon eastern time this afternoon. We should point out that this video was released because of new rules in chicago. Just passed back in february by the mayor and the city. Remember, that laquan mcdonald, the case that got so much attention eight months ago, remember it took 13 months for that video to even be released. So this is quite a change that this video of last weeks shooting coming out this quickly, but obviously concerning a lot of people, drawing a lot of attention. Well go back to that press conference on the right side of your screen as soon as it begins in chicago. For the moment, lets turn our attention to politics. We are an hour away from Donald Trumps event in des moines, iowa. From there the republican president ial nominee has to high tail it up to wisconsin for a second rally tonight. Keep in mind, wisconsin just so happens to be the home of the speaker paul ryan. Will trump finally endorse the House Speaker with just days left until the primary in wisconsin . What Hillary Clinton is saying about the e email server, lets start with the clinton campaign. Kristen welker spoke with the democratic nominee, part of a forum hosted by two professional organizations where she was asked about her emails. Youre the one who asked the questions. Walk us through her answers. First of all, this happened all the a convention for National Association of black journalists and National Association of his ppanic journalists. We each got one question. I said that during a recent interview, she said that fbi director james comey said that her answers were truthful and consistent with what she told the American People. Now that response got a lot of attention because director comey didnt exactly say that. He said that he had had no indication that she department tell the truth to the fbi, but didnt really weigh in on whether or not she was truthful to the American People. I asked her about that very point. Heres how she answered me. I was pointing out in both of those instances that the director comey had said that my answers in my fbi interview were truthful. Thats really the bottom line here. And i have said during the interview and in many other occasions over the past months that what i told the fbi, which he said was truthful, is consistent with what i have said publicly. So i may have short circuited. Lets turn back to chicago. The attorney for the family involved with paul oneills death last week. As we mentioned he was 18 years old and shot by police last thursday, july 28th. The video out today. Lets listen in. Id like to start off by saying that that is my first little brother. Im very hurt. Words cant describe how i feel at this moment and how i felt when it happened. But i really want everybody to know that paul was loved by my mother, his family, me, that was everybodys best friend. He loved to keep smiles on everybodys face and joking and playing basketball. He got out of school, graduated, got his diploma. We were trying to make the next step be going to dawson so he can pick up a trade, which is for the company com ed. But i want everybody to know that paul had goals. I cant do it. Im sorry. Lets give her a second to calm down. As you can see, this has been very hard on their family. Ive been in contact with their family from the beginning. From an hour from when it happen happened. Its been hard for her mother as well. She would like to stay private. Its been hard for their family because they never went through anything like this. No one should go through anything like this. No son, no brother should be kill killed and life being in the hand of a Chicago Police department. This is heartbreaking for me as an activist in chicago to continue seeing things like this knowing that i have a mission to see changes and every step forward is always ten steps back for us in the community. Protesters were people that want to e see changes always ten steps back when you make one step forward. This is one of those times. We asked for body cameras. We got those body cameras. But every time something happened, its always a problem with those body cameras. If you looked at the video, one of the body cameras supposedly was not working, but that officer supposedly turned it on as he was leaving the incident. I dont believe that story. I think we need to investigate more into what happened. Im putting pressure on the superintendent to see if that camera was really recording, if it that camera was turned off because it seems to me that all other cameras were working, that one should have been working and shouldnt have just magically came on after the incident happened. That story im not believing. So we have a lot of work to do. Its heartbreaking for me to have to sit with families and support them through tragedies. Were supposed to be supporting graduations, successes, the fact that paul could be joining that program. This is the type of support i want to be giving families. Not sitting here supporting them through a tragedy by Chicago Police department shooting him unarmed in the back. Questions . Can you talk about some good things about your brother and what you remember . I remember the ments where i will be just upset about something and he will always come in. Just to see other things than the neighborhood. Me and my mother stayed there to motivate him and kept him on the right path. The superintendent johnson says he will get to the bottom of it and officers will be held accountable. Do you believe hes sincere . We dont want her to speak on that. I can address that. Theres a whole lot of Unanswered Questions. So i certainly hope that superintendent johnson is sincere. They made the video available earlier than ever in the past. In the past we have had to fight. So this is a step in the right direction. If were showing us the video is a step in the right direction, there are so many Unanswered Questions about why, how. From seeing the video, it looked like they were close to highfiving each other. To hear one officer say f this, im going to be suspended for 30 days giving us an indication of how these officers felt about how they were jacked up and while they are saying this, paul oneill, 18 years old was lying face down on the ground bleeding after having been that has to stop. Its great to have body cams, even though we dont know what the body camera would have shown, but those who are turned on Police Officers, we still have Police Officers shooting unarmed black men as they are running. And that is what needs to be done, i would hope, when superintendent johnson says lets get to the bottom of this. Officers cannot exact their own street justice. While paul lay on the ground. If you have one message for police and the city. We just want answers. Nothing further. Just the truth. The problem is e we always looking for answers. The problem is we dont have any radical people in power that would just look at whats right and say we need to do this immediately. Its always procedures in place and fop contracts in place and they have to investigate and the investigation is going on. Its always these procedures we have to wait on and wait for answers. We need more radical people to say i saw that video and that officer did wrong and he needs to be disciplined immediately. We need a radical superintendent to be that way. So superintendent johnson should be that way, and he may violate some of the procedures and codes they have in place to protect these officers, but he needs to. Your reactions . Our bodies right then and there, we were really hurt. It was disturbing. Very disturbing. Not the way anything is supposed to be done. I dont want anyone to try to show my brothers image. I want to know the truth for myself. We have been listening in on a press conference, a very Emotional Press Conference there. In the center of the screen there is the sister of paul oneill. Shes 23 years old. If you have been watching for the last few minutes, you saw her break down. You saw her very emotionally talking about the death of her brother 18yearold paul oneill last week at the hands of police. Thats her brother there graduating. She call ed it disturbing to se the tape that got released earlier today in chicago. She said its not the way anything is supposed to be done. But she said she was glad that tape was released to the public because i wanted to know the truth. The lawyer that you saw on the left side of the screen was an attorney for the family of paul oneill. He says releasing the tape is a step in the right direction, but there are many Unanswered Questions. Lets go out to Tammy Leitner who are has been following this story from chicago. Walk us through what happened today and this e emotional reaction from the family. Obviously, a lot of Unanswered Questions, but this is what we do know. We do know that 19 yoormd paul oneill stole a car and when police tried to stop him eight days ago, he bailed out of the car. A pursuit happened and he was shot in the back. According to the autopsy, he died of a gunshot wound to the back. We know those three officers that were involved in this shooting have been relieved of their power. They were strip ped of their badge and their gun. We know that two of the officers involved in this shooting, there are videos from the body cam worked. The third officer we know his body cam did not work. Were told they were just given these body cams fairly recently and that officer apparently misused it. It was an accident is what the department is saying. We also know that that video was released today. E we received nine clips of video. We have been going through those all afternoon that show what happened leading up to the shooting, during the shooting and after the shooting. We do not have one of the principle cameras. That being the person, the officer who fired the fatal shot. We dont have that perfective, right . Theres one piece of video that could be a key piece missing. There are three officers involved. And the body cam for the third officer is saying it malfunctioned. This district just got the body cam videos recently just learned how to use them and you have to hit the button twice to start the video and once to stop it. They are saying possibly he got confused. But for whatever reason, it malfunctioned and we dont have possibly some critical video from that third body camera. Tammy leitner in our chicago bureau, thank you. Our msnbc chief Legal Correspondent ari melber joins me now. Also joseph cologne. As Tammy Leitner said, theres some missing some holes in the video that was released today. What are we seeing . We have been running it there a few times over. You see an officer draw a weapon and fire shots at a moving vehicle. There are wholes and yet this is more video faster than you typically get. This is critical because you see the shots at the moving vehicle. Legally thats one of the more problematic parts, even though we dont have everything. We can put on the screen the Police Policy on this, which flatly prohibits firing at or sbo a moving vehicle when the vehicle is the only force used against the sworn member. What that means in plain english is you cant shoot at a vehicle because its stolen or moving away or fleeing because thats use of deadly force for a fleeing suspect. And a e fleeing suspect isnt seen as posing deadly force. If someone had a gun out the window, that would change everything. Here we have a situation of someone unarmed. So what we just heard in the press conference that you were covering is also the statement from those participants and the family lawyer that they think it is questionable that such a key part of the video that might show the actual shooting is part of the video thats missing. Thats a question they are raising. Police superintendent johnson named back in april. Hes new on the job. He came out last week, took quick action, stripped the officers of their Police Powers and said it appeared they may have violated or some of them violated police policies. As you look at this as a former officer and you see people firing at a moving vehicle, what are your thoughts . We have been trained never to fire on a moving vehicle. Especially in a city like new york or chicago because if it you hit the driver and it goes into a sidewalk, theres people standing around. Theres the reason why they dont want you shooting at tires and the like. Unless they are shooting at you from the car, it would be all allowable. If you look at the penal code, it doesnt appear he was trying to run down any officers. They were still in the car. And this is a problematic shooting. We did get this video quite quickly, as you noted. You think back to laquan mcdonald, which took 13 months for that video to come out. Whats the difference in terms of procedure and releasing information to the public . Its a great question. The difference is after the outcry over laquan mcdonald, the city changed their policy, which used to have a presumption of withholding the video until all investigations were complete, which could take years. And now they have said they will release within 60 days, this even fast eer than that. For people at home saying, gosh, another incident, does anything change . Yes, today we are looking at this because of those controversies and that puts, i think, a lot of skepticism toward what at least in chicago they said for years, hey, we cant release this because it would prejudice investigations. Now all of a sudden, they can release it. Which goes to a difficult thing when you look at civil Police Relations and skepticism in the community and the fact that the data tells us the majority of officers are involved in questionable shootings, are bravely risking their lives, are protecting us. That can be true while at the same time when you have incidents like this, you have skepticism about accountability because the rules dont seem to be uniformly applied. Its the first day that chicago pd have released something before invtitions are complete. That allows the citizens of chicago and people around the country to look at this with their own eyes. Not to preare judge the kulkt but to add some facts and Video Evidence into what is a story that it ultimately obviously is going to be discussed either way. Thats whats different. When it comes to their conduct, can i clarify one thing i heard before i came out here on the set from another producer that there might be a moment after the suspect is shot after hes down on the ground where one of the officers is yelling at paul oneill. Do you know if thats right . The audio and video we do have, which does not show on vid e owe the shooting itself, does still show the officers swearing, speaking in an excitable or angry manner all about it. And again, with regard to the treatment of human life, which is something that officers are sworn to uphold and care about, theres certainly the appearance that well after the chase is over and the shooting is over, the individual here ultimately died on the ground, handcuff him and there isnt necessarily the appearance of great care for getting him medical attention or caring for his life. We know that he was killed in that manner. Theres plenty on here thats questionable. Thats not just me reporting that as a journalist. The Oversight Board here in the chicago pd has said some of that. The questions remain what happened to the rest of the video if it ever existed or not, why if it didnt exist why was there that malfunction and what will chicago do to provide the most transparent accountable mechanism. Its clear this is a faster and more transparent process than before. Quickly before we go to break, what happens next . How quickly will this get resol resolved . Its going to have to happen quickly because after the video, the citizens are going to demand justice here. There are no such thing as a good shooting, but this one is particularly bad. Thank you both for being with us. Appreciate it. Coming up, the long fight democrats and republicans have been having. The economy, are you better off than you were eight years ago . Both clinton and trump are promising more jobs. We talk with supporters of both campaigns, after the break. Ns. Where we explore. Protecting biodiversity. Everywhere we work. Defeating malaria. Improving energy efficiency. Developing more clean burning natural gas. My job . My job at exxonmobil . Turning algae into biofuels. Reducing Energy Poverty in the developing world. Making cars go further with less. Fueling the global economy. 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