In Little Havana. Fidel castro goes to his grave as a dynamic figure of the cold war. Once nearly nudged the u. S. And russia into a nuclear war. Our team is reporting from around the region. We begin tonight with nbcs chief Foreign Affairs correspondent andrea mitchell. Good evening, lester. At miami airport cubanamericans are lined up to go to cuba or greet relatives visiting from the island. No place in america has been as affected by Fidel Castros nearly 50year reign as south florida. Hes revealed by many exiled during his reign. Nevin his heyday he was admired by many around the world. To his followers, he was just fidel. To his enemies a feared dictator. One of the worlds last communists. The legendary fire brand began life simply. The ill legitimate class of a landowner. He graduated with a law degree and doctorate. Tried running for the National Assembly in 1952 until batista ceased power and cancelled elections. In 1953 castro lead a rebel group and failed. Castro ended up in jail for two years. Until an amnesty when he went into exile. In mexico, castro regrouped with his brother raul, and fellow revolutionary. On new years day 1959 they toppled batista. They marched into havana. He told the u. S. He was not a communist. Meet the press in april of 1959. I am not a communist. Reporter almost from the start castro confiscated the property of the wealthy, silenced newspapers, nationalized u. S. Oil refinery and signed a pact with the soviet union. In 1961 president John F Kennedy ordered the cia to inveigh cuba at the bay of pigs. At 3 45 p. M. Wednesday, april 19th reporter the resulting debacle helped castro consolidate power. By then declared a socialist he dramatically improved health care and literacy. Also accepted soviet missiles bringing the super powers to the brink of nuclear war. Requiring a full retaliatory response from the soviet union. Reporter until jfks hard line and backchannel diplomacy got the russians to pull back. For 25 years, moscow helped castro arm insurgents throughout latin america. But with the end of the soviet union, cubas economy imploded. On makeshift boats, thousands of cubans fled the oppressive regime. In 1999, a custody battle over 6yearold Elian Gonzalez became the symbol of americas struggle with castro. In the summer of 2006, under ingoing surgery fidel castro temporarily turned over power to his brother raul. Two years later he stepped down and succeeded by his brother. He spent years writing columns about his lifes experiences. Emerging publicly for Pope Benedicts visit in 2012 and Vladmir Putin and chinas president xi in 2014. This past march fidel castro was nowhere to be scene during president obamas meeting with raul castro. Days later, fidel wrote an editorial criticizing the u. S. And obama saying we dont need the empire to give us anything. Fidel castro never tolerated free election or dissent but gave his People Better health care and education. Still, his real legacy may beholding power for nearly half a century. Longer than any other modern leader. I first went to cuba in 1999, to cover the antiu. S. Protest for nbc news during the fight over Elian Gonzalez, the custody fight over the 6yearold boy. In my first interview with fidel castro and over the years in many interviews, he was argumentative, he would talk all night, he would debate. He was on the internet even though his people could not, for the most part, be on the internet. He followed our newscast. He told me what he didnt like. And we had a lot of arguments over politics, in fact, continued for many years. His final newspaper column was against the u. S. Election only two weeks ago. Andrea mitchell, thank you. Back in the u. S. The news of Fidel Castros death was largely met with celebration. It was a festivallike atmosphere in miamis Little Havana neighborhood with an eruption of joy pouring into the streets. Kerry sanders has been there for all of it. Reporter celebrations cuban style. Its opportunity were free reporter more than three people in miami is cubanamerican. More than a Million People waited for Fidel Castros death. I would call him a dictator. Thug. Murder. Hes our version of hitler. Reporter the party began in the Early Morning hours on Little Havanas famed calle ocho. Even miamis mayor born in cuba himself showed up. They came because they want to celebrate. Not the death of a human being but the death of a dictator. Reporter she fled cuba in 1961. She was 5 years old. Her father and mother died in the United States in exile. Those are tears of joy and sadness at the same time. Reporter cubans continue to escape the communist island more than 46,000 coming to the United States in just the last 12 months. It is the oldest cubanamericans who best remember what they lost when Fidel Castro Rose to power. Dr. Garcias father lost his farm and future. They took everything. They took everything from my father. Reporter the question now . What happens next . Hopefully well have a future democracy in cuba and ill be able to go back and visit the land of my birth. Reporter tonight here in Little Havana is filled with thousands of people. Itll be a party that will go on for hours. Most people here found out about Fidel Castros death on social media. But in a nod to the old school, the miami herald rehab ran a special edition. It brought to the forefront the difficult relationship with cuba. President elect trump seems to have a different view. Ron allen has more from the white house. Reporter today vastly different responses from the president and president elect. In a statement, mr. Obama extending a handle of friendship to cuba. Avoiding any mention of Fidel Castros humanitarian abuses. Between our two countries. Reporter mr. Obama offering condolences to castros family. From president elect trump, first a blunt tweet. Fidel castro is dead then a statement recalling a brutal tick they or it with a legacy of firing squads. Well cancel obamas onesided cuban deal. Reporter mr. Trump threatened to undo obamas orders. And allow more travel and trade between cuba and america. Steps taken by the Obama Administration as congress refuses to lift a 50year embargo on cuba. Top republicans calling on mr. Trump who vowed to repeal mr. Obamas policies to take a hard line because the castro family remains in charge. Dont expect fidels death to usher a new chapter, a happy chapter of freedom. Reporter around the world, the communist revolutionary allies weighing in on his death. Putin calling castro a true and reliable friend of russia. Here in washington, congress has no intention of lifting the sanctions while the Obama Administration and the final weeks continues trying to deepen americas new relationships with cuba we Fidel Castros death, cuba higher on president elect trumps agenda. Ron allen at the white house. Thank you. Stay with nbc news and msnbc for continuing coverage for death of fidel castro. Our team will be on the ground in cuba starting tomorrow morning and through the week leading to the funeral next weekend. If you thought the president ial election was behind us, word came today from the Hillary Clinton campaign that it will back the statewide election recount effort put on by Third Party Candidate jill stein in three key Battle Ground states. Kristin welker has more. Reporter good evening. It started when a group of computer scientists, including a Voting Rights lawyer, said they found voting irregularities in three states and thats what is prompting this. And the three States Donald trump has a combined margin of victory of about 100,000 votes. Today, on medium secretary clintons lawyer posted that the campaign has received hundreds of messages, emails, and calls urging her to do something, anything to investigate claims that the Election Results were hacked and altered in a way to disadvantage secretary clinton. Clintons Campaign Lawyer also stressed they have not found any evidence of hacking, but some democrats are skeptical after u. S. Officials said they uncovered evidence of russia hacking the emails during the campaign. President trump vacationing here in florida. Noting that secretary clinton conceded on election night. You may recall in the weeks leading up to the election, it was donald trump who said the entire system is rigged. That is why this is getting so much attention and one of the reasons why democrats so frustrated because right now secretary clinton leads donald trump by more than 2 million votes in the popular vote. Kristin welker, thank you very much. A quick programming note. Much more on that recount plus a look at the trump promises tomorrow on meet the press. The army corps. Of engineers ordered activists at the site of the Dakota Access pipeline to shut down one of the camps. Increased violence between protesters and police combined with harsh winter conditions means the area will be closed, according to the federal agency. In a statement a triable chairman expressed disappointment but insisted, our resolve to protect our water is stronger than ever. The long Holiday Weekend comes to a close tomorrow. For Many Americans it means time to start packing for the drive or flight home. Dylan dreyer has us covered on travel conditions across the country and the potential trouble spots. Were keeping an eye on spots around the country for travelers on sunday. A storm system will make the way on to the west coast. Were looking at heavier rain upanddown the coast. That stretches from seattle to l. A. Also, snow through the mountains. Mountain passes could be tricky, too. A cold front will bring heavier downpours from minneapolis to st. Louis. Its not until late in the day on sunday. Hopefully if youre traveling early you shouldnt have too much trouble. That will be an area through the midwest were watching sunday. Its out through the rockies and extending over into Salt Lake City where we could see minor delays with the snow coming down. Minneapolis we could see some delays later in the afternoon. If that front moves in a little bit sooner. Also, l. A. We could see some isolated delays. Mostly because of the occasional showers and gusty winds were expecting. It youre driving, we could be slow going on i80 and i70 and i15 in the Pacific Northwest as the storm system continues to make the way on shore. Dylan dreyer, thank you. Still ahead tonight, google versus isis. How the tech giant is helping in the war against terror. Plus, a movement that is catching on this Holiday Season. Temporary workers living just steps from where they work in the comfort of their campers. From bernardino to orlando recent terror attacks raised concerns about americans being radicalized. Not in war zones but online. One tech giant gave us an exclusive look at how theyre responding. Nbcs ronan farrow has the story. Reporter it may not look in the latest front in the fight against terrorism but here at google, researchers believe they could be on to a new way to confront isis. The Islamic State has a new era. Reporter jasmine green is the head and Research Development at jigsaw. Its latest challenge . Reaching a new generation of radicals. People drawn into violent extremism online. Like many of the estimated 30,000 foreigners who have joined isis from around the world. We believe there was an opportunity to use the internet to get to those potential recruits before isis. Reporter they call it redirect. We have the experience of searching for Something Like a pair of sneakers and then finding an ad for the sneakers pop up later. We have used that same principle instead to find potential consumers of isis messages online. Reporter if im a young person out there somewhere maybe sympathetic to joining isis, what is the process i go through . So you would likely search, for example, for a term like lets say its martydom valor and you would enter that. We would show you a ad directly relevant to your search. You click on the ad and would be taken to, for example, a video like this. Reporter videos of religious scholars potentially credible to isis sympathizers but preaching against isis. Not supporting it. Anything is worth trying. At least make it harder. Making harder for them to save making it harder for them. To save our children. Reporter sally evans grew up in a london suburb. He was just a normal little boy. He was on his computer. Reporter like many online recruits, he drifted away from family and friends. Eventually joining the terrorist group al shabaab. He was killed in this terrorist attack. The group used video of his death as propaganda. No mother should have to see that. That was awful. The final moments. At the moment there was nothing i could have done. I could have done worse. Reporter also falling into radicalism online. People need to know that anyone can become radicalized. Reporter he was considering a bomb attack in london but pulled back. What pulled me back was kind of listening to more relatively more moderate scholars. Reporter he was not a part of redirect but thinks it could discourage others. It appears some may be listening. In an eightweek Pilot Program jigsaw said redirect watched half a Million People. Minutes of video. All aimed at undermining isis. Were back in a moment with black friday numbers. Recordbreaking online spending in the u. S. And a makeorbreak day for many brick and mortar retailers. Back with new numbers tonight with the black friday shopping blitz. Americans spent a record amount scooping up sales online yesterday. Its still a make or break weekend for those brick and mortar stores. Reporter thanksgiving discounts driving huge numbers of shoppers to open their wallets this Holiday Weekend. We tried to save about 500. You get out early and get the best deals. Reporter online americans shelled out 3. 34 billion on black friday. Up more than 11 from last year. 1. 2 billion worth of merchandise purchased on tablets. Wall to wall traffic. You see in every store window theres a great sale taking place. It means the economy is headed in a better direction. Reporter the deals did not necessarily mean more people heading to stores. Retail data firm shopper track said visits to brick and mortar retailers were down 1 from last year. Today shoppers skipped Big Box Stores in favor for the little guy of Small Business saturday. You want them to stick around. It gives the neighborhood personality. Reporter the deals wont stop this weekend. Consumers turn their attention to cyber monday said to be the Biggest Online shopping day in history. Were able to get to something that is 40 off you normally cant. Reporter retailers like amazon hocking at least 75,000 deep discounts. Analyst forecasts shoppers will shell out this weekend. Youll see more retailers putting down their strategies, that kind of converge both the Online Shopping and the physical store shopping. Reporter retailers covering all their bases. Jo ling kent nbc news. Workers on wheels. The mobile force following the seasonal jobs. Finally, this Holiday Season with so Many Americans shopping during the next month, temporary workers are in high demand. A new migrant work force is filling many of the jobs. Janet shamlian has more on the group called work campers. Reporter when dollywood turns on 4 million lights for the holidays, its transformative for more than the guests. Betty gill, a former Bank Vice President runs a cash register. Sign that for me, please. Pork tenderloin and smoked turkey. Well get you fixed up. Reporter her husband mike a retired executive is boss of the buffet. We got the gravy. It goes on top of it. Reporter after their sixhour shift they head home. A 38foot rv currently parked in the shadow of the smokey mountains. Ive got gypsy in my blood. Reporter theyre mostly baby boomers who had it with the 9 00 to 5 00. Traded lucrative careers for lowpaying seasonal jobs for a lifestyle change. We were both in corporate 60 to 80 hours a week. When we leave dolly wood, they close it up. Reporter they are embracing the work campers. Some are retired. So far weve been up the east coast from florida to maine and back. Reporter now in texas the Leonard Family is camping until christmas. David makes 11. 25 an hour at Amazon Warehouse and daniel home schools their children and blogs about frugal living. Reporter how long do you think youll keep doing it . As long as we can. As long as life lets us. Reporter at dollywood the parttime jobs end next month. Their income enough to make their next stop time off in florida. Were living on 20 and we havent starved yet. We havent gone to bed hungry. Reporter a craving for Something Different as work camps trade money for memories. [ laughter ] Janet Shamlian news. That will do it for us on this saturday night. Im lester holt from all of us at nbc news. Thank you for watching and good night. A steady stream of rain hitting the area today. Were tracking the conditions. The news at 6 00 starts right now. Good evening, thanks for joining us. Peggy bunker, im terry mcsweeney. Lets take a look at highway 101 in san jose. As you can see, definitely still coming down. Traffic is responsible here, slowing it down because of slick roads. Rob, how does it look now . 44 100ths of an inch of rain in woodside, danville about 4 10ths of an inch of rain. You see san francisco, about a half inch, still adding to that now. Scattered showers are moving through the bay area. Light rain over downtown san jose. The second storm arriving here, dropping down the coast as we head into tonight