Nightly news with lester hold. Good evening. With the stroke of a pen, South Carolinas governor just a few hours ago signed the law that will bring the confederate battle flag down from the state capital grounds once and for all. It follow as hardfought and emotional battle that went to the wee hours of morning with a hate motivated attack on members of a black church in charleston. Removing the flag doesnt heal racial divide or bring back the nine lives taken but those who fought for the removal believes it makes a powerful statement, one that is already rippling to the halls of congress tonight. We start with ron allen. Reporter with the stroke of nine pens, one for each worshipper killed at mother emanuel church, governor nikki haley signed a bill that will remove the flag from the state house grounds. Im proud to say that it is a great day in South Carolina. Reporter history after an extraordinary 12hour debate by lawmakers about heritage, hate and the flag. I cannot believe that we do not have the heart in this body to do something meaningful, such as take a symbol of hate off these grounds on friday. Reporter representative jenny horn demanding respects for the church victims. For the widow of senator pinckney and his daughters, that would be adding insult to injury and i will not be a part of it. Reporter blasting fellow republicans fighting past midnight to keep the flag flying. People say you turned the whole thing around. If i did, im glad im glad i could add something. Reporter the powerful symbol first hoisted in defiance of the civil rights movement. Now headed to the relics room of a military museum. Defenders vowing to continue the fight for recognition of the flag. You wont ever get passed what happened in charleston, but time and distance will make it less emotional to deal with. Reporter that pain perhaps most intens for those who lost loved ones. The reverend Daniel Simmons senior. It was just a symbol that our grandfather and the other victims did not die in vain. Reporter the reverend Anthony Thompsons wife was killed. When i think about my wife and the other eight people cant think of a better thing to happen than the flag coming down. Reporter so many here still so moved by the grace those families continue to show, and the forgiveness they continue to express. Here at the state house grounds, near the flag pole, preparations are underway, security is tightening, there is a crowd growing because tomorrow, friday, 10 00 a. M. The plan is to bring the Confederate Flag down. Lester . Ron allen, thank you. What started in South Carolina forced a broader examination over the use of the Confederate Flag symbol in official places elsewhere in this country and that fight spilled into the House Chamber of the u. S. Capital with a shouting match broke out. It was an angry, chaotic scene among protesters. Kelly odonnell is there for us. Reporter listen carefully, a roar of protest and passion sweeping the u. S. House today. Gentlemen. Reporter the sound of raw division. The flag of the United States of america, this is not that flag. Had this confederate battle flag prevailed in war 150 years ago, i would not be standing here today as a member of the United States congress. I would be here as a slave. Reporter congress is battling over new restrictions to remove confederate battle flags from federal property Like National parks. Democrats say there is no room for debate. Dont republicans understand that the confederate battle flag is an insult to 40 million African Americans . Reporter this fight started when southern republicans tried to protect the use of confederate battle flags at governmentowned cemeteries where civil war dead are buried. To me its historical perspective. We cant erase history. Reporter leaders tried to take the cemetery measure into a major spending bill but democrats were outraged and House Speaker john boehner abruptly cancelled the vote. I do not want this to become a political football, it should not. Reporter lawmakers use this under ground tunnel every day, all the state flags are underway but now mississippis flag is an issue. It contains the confederate symbol. Many democrats say it must go. Tonight congress is stalled, leaving history on hold. Kelly odonnell, nbc news, the capital. There is Important Health news for those who take some of the most popular nonaspirin pain reliever ounce the market including big brand names like advil and aleve. Until now the fda says they might increase your risk of a heart attack or stroke but for the first time they say the evidence is conclusive and as nbc tom costello reports, stronger warnings on the bottle are coming. Reporter the new stronger warning covers brand name painkillers found in many if not most american homes, among them advil and motrin. And their childrens versions. Aleve and celebrex and cough and cold remedies too. The fda says nonsteroid anti inflammatory drugs or nsaids can increase the chance of heart attack and stroke. The risk is greater when the drug is taken in higher doses. Dr. Alan taylor is the chief of cardiology at Georgetown University hospital in washington. This is really out there in the cardiac icu we see patients with high Blood Pressure heart attack stroke what is going on with you . They have been taking those drugs. Reporter they can increase the risk in patients without Heart Disease risk factors. The dosage at which it can become dangerous can vary from person to person. Although the label will give you a maximum daily dose, we really almost never recommend that patients take that amount, rather, we always recommend to patients to take the lowest dose that controls their symptoms for the shortest duration of time. Reporter and even a short duration, just a week can lead to heart attack and stroke. Advice from experts, try tylenol before nsaids and dont make it a daily routine. Tom, we know a lot of people will have questions. We put a lot more information about this, including a complete list of the drugs included on our website. There are unsettling new details emerging about one of the largest Security Breaches in u. S. History. Sensitive personal information stolen from over 20 million americans. The extent of this hack attack far great er than we were first told. Our senior White House CorrespondentChris Jansing breaks it down. Reporter following three months of what officials call an extremely complicated investigation, some stunning findings. In two separate but related breaches, 21. 5 Million People had highly personal information stolen, thats nearly one in every 15 americans and the crooks were inside u. S. Government Computer Networks for almost a year before they were caught. What was taken, Social Security numbers, fingerprints, Health Records and financial histories. The fbi director himself told Congress Just yesterday it didnt only hit him. All of my family, their addresses, so not just my identity is affected, i got siblings, ive got five kids, ive got, all of that is in there. Reporter while Officials Say there is no evidence the stolen information has been used, for now, background checks are being done by handwritten forms. Pressure to figure out what happened has been escalating in congress for months. Today Oversight Committee chairman said heads should roll. The president wants to solve this, he needs to fire the opm director and get rid of the chief information officer. Bring in some highly qualified nerds and fight this. Reporter calls for director kathryn to be fired are crossing party lines but later today, she said she wont resign. As for that stolen information, the fbi director said imagine if youre a foreign spy how useful it would be. The congressman said the National Secure ti implications are off the charts. Lester . Chris jansing, thank you. We learned how close we may have come to a terrorist attack over the july 4th holiday weekend. Arrests in recent weeks likely stopped multiple plots in their tracks targeting the holiday. At the same time, the fbi director is warning new technology a lot of us use to communicate is making it much harder to track terror suspects. We get more from nbcs pete williams. Reporter as big cities were making plans for july 4th celebrations, the fbi was making arrests. Some rounded up the fbi says were talking about killing people during the holiday. Fbi agents made a dozen terrorrelated arrests in the past month and the fbi direct tomorrow said some were carried out stop planned attacks. Two came in boston and a third man there killed a month ago originally planned attacks on july 4th. The fbi says all were communicating with isis figures overseas responding to social media message advocating violence blasted to cell phones. There is a device, a devil on their shoulder all day long saying kill, kill, kill, kill. Reporter the fbi says isis directs those who respond to use applications like whats app and threema that encrypt a message as soon as its sent and dont unscramble until received. The company handling the message cant read it either even when the government comes with a court order. Our job is to look at a haystack for needles invisible to us because of end to end encryption. Reporter but many Internet Security experts say what the fbi wants is a bad idea. To all of a sudden say all u. S. Company haves to Design Systems in a different way, in a way fundmentally less secure and gives the u. S. Government access, special access, is going to hurt u. S. Companies in the global marketplace. Reporter a debate on privacy versus security heating up in congress. Overseas now, were following a serious setback in Nuclear Talks with iran. A key deadline missed, each side accusing the other of making tough choices necessary to close the deal with time running out. Our chief Foreign Affairs correspondent Andrea Mitchell is in vienna tonight, andrea. Reporter lester, tonight iran says the u. S. Had major parts of the deal at the last moment and today with irans president at his side in moscow, Vladimir Putin dramatically broke ranks with the u. S. His partner at the talks until now. Clearly frustrated, john kerry said hes prepared to leave. We are not going to sit at the negotiating table forever. Reporter how long are you willing to stay, mr. Secretary . I just said this is not openended. President obama made it very clear to me last night, you cant wait forever for the decision to be made. Reporter whether this is a lastditch attempt to ring concessions or a break down not yet clear. Lester . Andrea mitchell, thanks. Donald trump is pushing back against reports of Republican Leadership told him to tone down the fiery message on immigration. The way trump tells it to the Washington Post it was a polite light suggestion. In washington 100 protesters gathered at a site where trump is building a hotel to protest his remarks about illegal mexican immigrants. While those remarks angered some for others trumps comments are are striking a cord. People believe hes calling attention to a vital threat along our boarder. Nbcs mark potter has more on that part of the story. Reporter for several years, hidden cameras in the arizona desert have captured scenes like these, of drug and immigrant smugglers sometimes armed hiking through miles of american ranchland after illegally crossing the u. S. Mexican boarder. This video was shot in may, south of tucson just two months before donald trump complained about boarder security. We dont even have a boarder. People just flowing through like water. There is no boarder right now. Reporter arizona rancher john ladd whom we visited several times before along the mexican boarder fence and others have long complained. They just cut everything at ground level now. Reporter about what they say is an insecure boarder that leaves them facing security threats on their own land. They applaud trump for giving their concerns a national voice. I really am impressed that finally somebody has courage to talk about the reality of whats going on. Reporter while ranchers see a dramatic drop this year in immigrant traffic, drug smuggling is ramped and say trumps message is vital. Hes talking about securing the boarder, thats important. Reporter in your view, the boarder is not secure . Absolutely not. Reporter but others say the comments are offensive. And insists hes over playing the security threat. Jimmy lives a half mile from the boarder. The tone was arrogant at best and nonsensical at worst. What he said was just not true. Mr. Trump doesnt actually know what is going on. Its easy to sit back in new york city in trump tower and make statements. Reporter trump plans to travel to arizona this weekend where hes already drawn lots of attention. Mark potter, nbc news. Still ahead tonight, can you help solve a mystery . Take a close look. Do you know this little girl . So Many Americans have seen her face as though authorities called for calls. Also, the new rival for harry potter. But that hasnt stopped me from modeling. 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A computer image of the little girl produced a flood of online clicks but authorities have few clues to go on. We get more from nbcs ron mott. Reporter a computergenerated image of this little girl got more than 50 million views online and while there are dozens of leads, they are appealing to those closer to her. If youre the parent or caregiver of this young girl, please, step forward, clear your conscience and help us identify her. Reporter the socalled from scratch composite was created from the National Center for missing and exploded children using various photos from stock photos and enhancing from various details from the body. A woman walking her dog made the discovery on a rocky shoreline of deer island near boston logans airport. Everyone is aware of this right now and concerned. How can someone do that to a little baby . Reporter Officials Say the girl was 4 year old and a pair of black and white polka dot leggings and a zebra blanket was found with her. This will take time to run through fingerprint and dna databases but this is a highly solvable case. Reporter the Massachusetts State Police is asking the public to be alert for any children that seem to have gone missing from communities, neighborhoods, schools, church programs, parks or places where people gather. She deserves to have her identity known to the public and she deserves the kind of dignified burl of any human being. Reporter eyes and ears by the tens of millions, looking and listening for clues to put a name to this face. Ron mott, nbc news boston. Were back with a scary scene in the ocean and unlikely gadget that aided the rescue. And the wolf was huffing and puffing. Kind of like you sometimes, grandpa. Well, when you have copd it can be hard to breathe. It can be hard to get air out, which can make it hard to get air in. So i talked to my doctor. She said. Doctor symbicort could help you breathe better, starting within 5 minutes. 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Harper lees novel go set a watchman is the most preordered print title since harry potter back in 2007. Lees new book which she wrote over half a century ago before to kill a mockingbird and recently discovered is due out next tuesday. If your invitation to the royal christening was lost in the mail here is the next best thing. William and kate with their newborn Princess Charlotte in her gown with her big brother george and a big family portrait taken in the drawing room of Queen Elizabeths country home. When we come back, were going to need a bigger lens. The story behind the epic shark on shark photo bombing. Finally tonight, for a lot of us, these pictures around here are about as near as we would like to get to a shark, but then there are people compelled to satisfy curiosity to these creatures by getting up close and personal, people like our own peter alexander. Reporter let just agree if you can hear the shark mouthing off, youre too close but for those looking to get their moneys worth, the only thing greater than one great white is two. Back it up. How is that for aerial acrobat i cans . A week earlier an 11foot great white enjoying a closeup, the audience paying to be petrified. The teeth were very sharp and right in my face. Reporter she was in the cage. The video was just shocking. I mean, looking at it again, i felt everything all over. Reporter its one of the most notorious great white hunting grounds on earth where thrill seekers bait the giants to the boats, the same sharkinfested waters in south africa where we dove in 2011 to see these fierce predators eye to eye. Beneath the surface its silent, the mirky water adding to the adrenaline and then another and keep coming. Once they pass they make contact and you stair into their eyes for a moment. Reporter to get a better look, researchers rigged up hundreds of under water cameras. You think about sharks, big teeth in the ocean where we feel helpless, that can be scary but, you know, they are just such amazing predators. Reporter filling us with fear and exhilaration. Peter alexander, nbc news. That will do it for us on this thursday night. We want to let you know, South Carolina governor nikki haley will join matt lauer exclusively tomorrow morning on today as the confederate battle flag comes down from the state house grounds. Im lester holt, for all of us at nbc news, thank you and good night. Lester holt, for all of us at nbc news, thank you and good night. There it is. What Police Describe as arianna grandees ma delicious donut lick. Will she be charged and is this a