Mr. Trump shifting his position, quote, will scare the bejesus out of the kremlin. Lester . Cynthia, thank you. Breaking news tonight from charleston, where an avowed white supremacist has been found guilty on all counts of a horrifying massacre inside mother emmanuel church. Tonight, were getting reaction from a survivor who was forced to watch a coldblooded killer murder her son. Nbcs Gabe Gutierrez was in the courtroom. Reporter fueled by racism, he walked into their sanctuary and opened fire. This afternoon, a jury found dylann roof guilty of 33 federal counts, including hate crimes. I knew it was going to be guilty, guilty, guilty. Reporter Felicia Sanders, one of three survivors that awful night, who testified during the trial how she watched roof take her 26yearold son tywanza. Not too many mothers ever see their son come in and leave the world. So that was very painful for me. Reporter during his closing argument, the prosecutor raised his voice in anger, calling roof a man of immense hate red and tremendous cowardice, who shot his victims while they prayed and had their eyes closed. These nine people exemplified a goodness greater than his message of hate, he said. The defense conceded the horror of the rampage, but his attorney tried to bring up his clients mental state. Hes still in here, im afraid. Hes still in there. Reporter this chilling 911 call from inside the church was among the evidence laid out for jurors, including racially inflammatory writings and a potential hit list of other churches. I wanted to do everything i had to do to make sure we get a conviction. Reporter and she did. Where dylann roof failed to start the race war he wanted, Felicia Sanders succeeded in honoring her sons memory. I wear a smile. The reason i wear a smile, because if you look at the pictures of all nine, they all wore a beautiful smile. Reporter in this same courthouse, where decades ago, historic cases of School Segregation were decided, dylann roof now faces the possibility of the death penalty. He says he wants to represent himself during sentencing and felicia says shes plans to testify again. Lester . Gabe gutierrez in charleston, thank you. Theres new fallout tonight from a massive hack against yahoo. Private information from over a billion people stolen. The largest ever breach of its kind that has a lot of americans concerned. But experts say if you think you might have been affected, dont delete your account. Nbcs Miguel Almaguer explains what you should do and whats at stake. Reporter with the fbi investigating the hack that compromised the private information of one billion yahoo users, tonight the white house cant address the scope of vulnerable material now in the hands of cyber criminals. We know names, dates of birth, even security questions have been exposed, but more may have been lost. Experts say at least 150,000 government and military employees are also among the victims. The 2013 breach disclosed wednesday wasnt even discovered by yahoo. The fact that an outside party had to come in and explain to them what had happened, is not great for yahoo and sort of underscores their management failure. Repter with yahoo stock sliding, verizon said its evaluating its 4. 8 billion deal to buy the internet giant. Verizon wants access to yahoo users and experts say could get them at a bargain price. We think they still want to do this deal. Town hall, ultimately, what are they buying . The yahoo finance, yahoo sports. Reporter but for many, the brand is tarnished. Beth cohen cramer dumping yahoo switching to google. Im fed up with it. I feel like this is the last straw for me. I cant assume theres any kind of security in place. Reporter but experts warn simply warn against simply deleting your account. If your account was linked to Online Banking or social media, hackers could recreate the access, recreate the account, gaining access to them. So instead, change passwords and security questions. A tangled web of hacked information, exposing one billion users in ways still unclear. Miguel almaguer, nbc news, los angeles. Tonight, much of the country is caught in the grip of an arctic blast, stretching from coast to coast. After days of bitter cold, today it got even rougher out there. Al roker is up in a moment with the forecast of what else is on the way. But first we get the frigid details from nbcs ron mott. Reporter bitterly cold air, snow, and ice, and a harsh reality tonight. Getting around, suddenly a whole lot tougher. At least 50 vehicles involved in this pennsylvania pileup. Three people hurt. Truck passed over, got into a ditch and then it started piling up after that. Reporter in oregon look out reporter scary moments when this school bus lost control. Fortunately, no serious injuries. Nice and easy. Reporter hundreds of others stuck. Why stay in my car when i could be out here helping. Reporter upstate new york, blizzard conditions. Hello, canada, thank you for the cold air. Reporter the brutal blast from the north sent windchills plummeting. 17 below in chicago, 12 below in minneapolis. Cleveland, 6 below. Misery that has company. All but two states in the lower 48, below freezing somewhere. In chicago the zero patrol was busy today. Driver Jason Blevins finding plenty of stranded motorists to get out of a cold jam on the illinois towaway. In this case, a stubborn flat tire, a relieved driver. Not the way you wanted to spend your thursday. No, a little too cold for this. Reporter bundled up in boston. Temps in the 20s today. Tomorrow, much colder. Were in for a long winter at this rate. Reporter chicago is due for a bit of a warmup tomorrow, and then another on saturday before taking yet another plunge into a deep freeze on sunday. The forecast high temperature, lester, 1 below. Ron mott in chicago. As promised, al roker is here. What are we looking at tomorrow and heading into the weekend . We have a brutal onetwo punch of two arctic air masses, one right after the other. Heres the first round. And look at these temperatures. Friday morning, the windchill, minus 10 in billings, all the way to portland, where its minus 19. The second reinforcing blast of cold air. Pierre, minus 25. These are air temperatures. Minus 3, kansas city. 14 below in 14 in indianapolis. Factor in the windchills, it will feel like minus 37. Sunday in minneapolis, 1 above. In indianapolis, and minus 41 in pierre. Into all this cold air comes a vigorous low pressure system that friday moves out of the rockies into the plains. A swath of four to eight inches from rapid city to cleveland. Continues into the midwest and northeast. Look at the air flow. Take a look at the actual im sorry the actual accumulations through the weekend, on into the northeast. And in fact, just to kind of reinforce this, lester, it will be 14 below monday morning in chicago. In the south pole, its actually going to be warmer at 12 below. Dont know if that makes anyone feel better. I dont think it does, but thought id share. It is what it is. Al, thank you very much. Frantic evacuations have resumed in aleppo after a new ceasefire went into effect, but secretary of state john kerry said some fleeing civilians are still under attack by syrian forces, accusing the regime of nothing short of a massacre. And many of those under fire are children. Nbcs bill neely has more from inside syria. Reporter fleeing aleppo today, children under fire. One screaming for her father. There was meant to be a ceasefire as they left the rebelheld east. Yet still they were targeted. Their mothers trying to comfort them. Nearby, other children fled today. They have no parents. Orphans of the war. 47 of them, finally able to leave an orphanage riddled with bullet holes. And defiant. Were leaving aleppo, he says, but when we grow up, well be back to liberate it. From their refuge, they pleaded yesterday for their freedo led by 11yearold yasmin karmuz. Were scared, get us out. Nbc news has been following their ordeal for months. Reporter this was august. Yasmin is playing, but her teachers told us she was traumatized. Her parents, killed by an air strike. The next month, she told us, when theres bombing, i hide under the blanket. Im scared. I want to have my father, to see my mom. In october, it got worse. The orphans hit hid underground, the siege tightening. Today, it ended. Yasmin and all her friends leaving aleppo. Gunfire as they went. They were part of a huge convoy, thousands evacuated as the city fell to president assads forces. The biggest rebel defeat so far. But not the end of a war that has orphaned so many, and for some thats lasted a lifetime. And thousands more civilians will be evacuated tomorrow. The orphans are safe tonight. But theyre in another rebelheld area, which president assad has vowed to recapture. Their trauma may not be over yet. Lester . Bill neely in syria, thank you. Tonight the Egyptian Government says traces of explosives have been found on some of the victims from that doomed egyptair flight from paris that went down over the mediterranean back in may. All 66 people on board were killed. No one has claimed to have attacked the plane. Egypt says a criminal investigation is under way. Still ahead as we continue tonight, facebook crackdown. The social media giant launching a new war on fake news stories in your feed, but putting much of the responsibility in your hands. Also, whoa dolly. How the Country Music superstar is helping neighbors in need, to the tune of millions. 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Today, after months of public pressure, the social media giant announcing new preliminary measures, to weed out stories that are intentionally false, and spread for financial gain. To make it easier for its 1. 8 billion users to report a hoax, they can click the upper righthand corner of a post to flag content. If enough people mark it, the story will be reviewed by facebook researchers and passed on to independent journalists to factcheck. If determined false, the piece will be marked disputed on facebook, demoted in your news feed and the creator will be banned from promoting it on facebooks advertising platform. Facebook is censoring to the extent they will cut off some sites from economic benefit. Reporter marco chacon runs a fake news site, he says his articles are satire. If you look at that site and think its a real news story, i think thats on you. Reporter chacon welcomes facebooks new measures and doesnt think it hurts his right to free speech. Facebook is a private company, they can decide for ideological or business reasons if they want their News Platform to be used for this stuff. Thats totally legitimate and its not censorship. Reporter facebooks announcement said, we cannot become arbiters of truth ourselves, and that its targeting the worst of the worst. Fake news is not as simple as bzzz, its false. But right now, theyre trying to factcheck those things that are apparently and obviously false and not give them money. Thats an easy first step, but theres a lot more work to do. Reporter a controversial experiment, facebook asking users to police fake news, trusting them to call it when they see it. Jo ling kent, nbc news, new york. Were back in a moment with a heartbreak tonight over a legendary tv personality. If you have moderate to severe plaque psoriasis, isnt it time to let the real you shine through . Introducing Otezla Apremilast . Otezla is not an injection or a cream. 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And big money from a big star, giving back to the place she loves. Dolly parton said here says her starstudded telethon raised 9 million for families affected by the devastating wildfires in tennessee. The dollywood foundations my people fund will provide a thousand dollars each month for six months to families who lost their homes. When we come back, the secret santa is bringing a welcome surprise to unsuspecting holiday shoppers. After a dvt blood clot, i sure had a lot to think about. What about the people i care about . Including this little girl. And what if this happened again . I was given warfarin in the hospital, but wondered, was this the best treatment for me . So i asked my doctor. And he recommended eliquis. Eliquis treats dvt and pe blood clots and reduces the risk of them happening again. Yes, eliquis treats dvt and pe blood clots. Eliquis also had significantly less major bleeding than the standard treatment. Both made me turn around my thinking. 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Finally tonight in the season of giving, some folks needed a little extra help to make their familys holiday wishes come true. But a group of secret santas working in Mysterious Ways is here to help. Nbcs jacob rascon explains in our inspiring america report. Reporter when the store manager called if youre here for the 4 00 event, can youlease come to Customer Service . Rorter they thought they were in trouble. I thought, what could this be . Reporter they had thousands of dollars in toys and clothes on layaway. Diane neros far from paid off. I really wasnt expecting to get it out until after christmas. But this year im dwight, this is devin. Reporter christmas came early. Weve been blessed with an opportunity to take care all the bills that you have on these layaway items. So theyve been completely paid off. [ applause ] reporter for many like mary jackson my layaway is paid off and its a blessing. Reporter their gifts are for children who might otherwise get nothing. I just want to see kids happy, even if i dont get nothing back in return. But look what happened. Reporter pay away the layaway is a national charity, collecting donations online, paying off tens of thousands of dollars in layaway accounts. This year, in 30 cities, even getting nba athletes to play elf. Who is your favorite part . The lady, how excited she was. Unexpected but just really thankful. Reporter the only person more excited than diane about her layaway, will be her 12 grandchildren. Im so thankful. They will get these for christmas, thank you. Its a blessing. Im so happy. God is good. Reporter the season of giving, to the giftgivers too. Jacob rascon, nbc news, dallas. That is going to do it for us on a thursday night. Dont forget football tonight. The rams take on the seahawks here on nbc. And theres a saturday game too, the dolphins versus the jets. Im lester holt. From all of us at nbc news, thank you for watching and goodnight. Holt. From all of us at nbc news, thank you for watching a nbc news sports, home of the olympic games, the nhl, premier league, the chase for the nascar sprint cup, and primetimes number one show, sunday night football, only on nbc. On a brisk night in sle, Russell Wilson looks to rebound from a lopsided loss in green bay, and in the process, help the seahawks clinch a playoff berth over jared goff and the rams. For l. A. , its the first game following the firing of jeff fisher