History for this countrys struggle for civil rights. It became to be known as bloody sunday. Today the nations first africanamerican president retraced those steps alongside dozens of others including former president george w. Bush. President obama took a moment to look back and forward enlisting a new generation into the fight. Nbcs Kristen Welker joins us from the bridge where protesters changed the course of history. Kristen. Reporter pet efb evening. The energy was electric here. Its estimated as many as 40,000 people turned out from all across the country to honor the courageous men and women who risked their lives to fight for equality and justice on this bridge 50 years ago. 50 years ago he would have been met with troopers tear gas and taunts. Today, the first africanamerican president clutched the hand of one of the men who made it possible for him to be here as they crossed the Edmund Pettus bridge a symbol of how far america has come. If someone had told me that we were crossing this bridge that one day i would be back here introducing the first africanamerican president , i would have said youre crazy. Reporter introduced by congressman john lewis, the only surviving leader of the selma march, president obama paid homage to all those who paved the way for him. They didnt help elect me to office but they led a nation. Reporter the march for this crowd this day is personal. Ive always been taught you dont know where youre going unless you know where you come from. Im here for my parents and my grandmother. She probably couldnt even imagine standing here in this place. Reporter its also a reminder of how painful it was to get here. It was march 7th 1965 when a group of activists set out on this bridge to demand Voting Rights. And were met by an unimaginable brutality by those who were supposed to protect them. What did they do . They started wading in after a shock period of time. Reporter b beating and riding horses. And with the tear gas it was horrible. And it was something that i dont ever want to relive. I was injured along with a few others. Reporter mary was a child when her mother viola volunteered to drive marchers home after a subsequent trek from selma to montgomery. A lot of people said it wasnt violas battle to fight, after all she was a white mother of five. For her, her children having a good life involved having a better world. Reporter that courage cost viola her life killed at the hands of the kkk. I am so proud to be her daughter. Reporter the daughters and sons of selma say the journey isnt over yet. With incidents like ferguson and the supreme courts decision to reverse a key part of the Voting Rights act, today president obama had this message for 100 members of congress who made the trip with him and those who didnt. If we want to honor this day, let that hundred go back to washington and gather 400 more and together patch to make it their mission to restore that law this year. Thats how we honor those on this bridge. Reporter a renewed call to action to fulfill a vision from 50 years ago. Now, there was a small group of protesters here today. They were demanding that Police Reform after ferguson president obama didnt appear to hear them. Meanwhile this community continues to remember tomorrowe going to turn out again. Theyre going to cross this bridge one final tribute to bloody sunday. Peter. A historic anniversary, Kristen Welker thank you. Tonight, there are protests over another Deadly Police shooting of an unarmed man after complaints of a confrontation, this one last night in madison, wisconsin. The investigation is just now beginning. And we get more tonight from nbcs anne thompson. Reporter from madison, wisconsin today cries similar to the ones heard in ferguson and new york. Protesters out in force after last nights killing of Tony Terrell Robinson jr. , an unarmed black man shot by police. Tapes of local police transmission show the beginning of the incident as Police Responded to a complaint. Look for a male black light skinned, tanned jacket and jeans outside yelling and jumping in front of cars 19 years of age name is tony robinson. Reporter more police calls came in with reports he assaulted people before running into an apartment. Madisons police chief says an officer followed the suspect, heard a disturbance and forced his way into the apartment where the suspect attacked him. Shots fired. Shots fired. 1247 copy shots fired. Reporter today officials identified matt kenny, a 12year veteran, as the officer who shot and killed robinson. I want to be very transparent. He was unarmed. Reporter officer kenny the chief said was involved and cleared in a Fatal Shooting in 2007. Kenny is now on administrative leave. Oh my god, they killed my grandson. Reporter robin r and aunt joined protesters at the crime scene last night telling the crowd robinson was a good person who planned to go to a technical college. They urged calm. The state division of criminal investigation now has the case as required by law in fatal police shootings. Chief cobalt called for restraint in the wake of robinsons death. We need to make this a very public show of our remorse and contrition for his loss. 19 years old is too young. Reporter a loss he described, as tragic. Anne thompson nbc news new york. This week isis sparked new outrage by destroying more ancient remains at iraqs heritage sites. Now as the iraqi forces fight to take back key cities from militants, theyre finding help from an unexpected ally. Nbcs chief Foreign CorrespondentRichard Engel has our report tonight. Reporter the front line in the war on isis is inching closer to the iraqi city of tikrit. But its not american advisers who are helping the iraqi army move on its target. Its iranian advisers. Led by this man, head of irans clandestine force. But theres nothing secret about his presence in iraq now or about the fact that most of the 20,000 or so fighters who are laying siege on tikrit are not members of the Iraqi National army. They are fighters from sectarian shiite militias. Iran according to u. S. Officials, is providing them weapons, intelligence and surveillance. Joint chiefs chairman general martin dempsey, who arrives in iraq next week has said iran could play a useful role in fighting isis. If they perform in a credible way, rid the city of tikrit turn it back over to its inhabitants, then it will in the name have been a positive thing. Reporter meanwhile isis is busy destroying the regions uniquely rich cultural heritage. First, isis released a video showing its men ransacking mosuls museum desecrating what historians call artifacts from the cradle of civilization. Then reports the militants have bulldozed the ancient city of nimrud and today iraqi Officials Say milis are destroying the 2,000yearold city of hatra. My reaction was anger first and foremost. And rejection and condemnation of this appalling act of what we call a cultural cleansing. Reporter isis is trying to destroy any sign of a civilization other than its own interpretation of sunni islam. Iran has its own goal to fight isis while at the same time expand its influence in iraq. Richard engel, nbc news istanbul. Two suspects have been detained over the murder of russian Opposition Leader boris nemtsov. He was gunned down late last week in of red square. He was one of president putins most outspoken critics. The kremlin denies any role in his death. Back in this country some of the gops top president rnl contenders have descended upon iowa to court voters in the all important bellwether state. Theyre taking p in an agriculture summit but in many ways this is about planting seeds nor a 2016 run. Nbcs Kelly Odonnell is in des moines for us tonight. Kelly, good evening. Reporter good evening, peter. Iowa is already vetting potential candidates for 2016. But what happened today was different. This was not a campaignstyle event with stump speeches or candidates signs. Instead this was a test of fluency on farm issues. And there was a lot of attention around jeb bush making his first campaignstyle visit to iowa. At the agriculture summit food is politics. Well be cooking iowa beef. And ill probably make a really good guacamole. Reporter everything from ethanol to the impact of epa regulations. The first thing you do is you change president s. Reporter many conservatives are wary of jeb bush on immigration, but he found an opening here because agriculture relies on migrant labor. Bush called for a step short of citizenship. Immigrants that are here need to have a path to legalized status. Reporter todays summit drew nine republicans with president ial ambitions. From neighboring dairy state wisconsin, Governor Scott walker separated himself from bush on immigration. Im not supportive of amnesty. I respect their views on that but im not a supporter of amnesty. Reporter new Jersey Governor Chris Christie has been in iowa often and brushed off attention surrounding jeb bush. Do you feel any of the jeb bush pressure . I dont feel it. I dont feel that kind of pressure. Reporter christie even cheerfully dismissed protesters from his home state. Great to have you here. Reporter upset by his handling of Superstorm Sandy recovery. Im glad to see that new jersey has come to iowa. How great is that . Reporter unusual for a republican event, no mention of Hillary Clinton. But off stage clintons use of only her personal email account for official government business at the state department drew sharp criticism from ted cruz. One expects the Justice Department to investigate that reporter and Hillary Clinton did not address the issue of the email usage when she was at a speech in miami. Jeb bush remained here in iowa visiting some restaurants that are always muststops on the campaign trail. His chance to really mix it up with iowa voters. Peter. All right, kelly, thank you very much. While the controversy surrounding Hillary Clinton drew criticism from at least one republican president ial hopeful, its now stirring debate among democrats, specifically for what it means for their most high profile candidate. For more were joined by our political director and moderator of meet the press, that is chuck todd. Chuck, this clearly isnt going away. On top of the benghazi controversy how big of a distraction is this for clinton as she gears up for a potential 2016 run . Obviously its a distraction right now because were potentially just a few weeks away from when she officially begins her campaign. Shes making hires. And its putting the structure together. Right now with democrats, i mean weve done our own polling. Well be debuting some tomorrow and throughout the week. Its not hurting her yet with democrats. But thats not the issue that shes got to be dealing with with this email business. Its the fact that it gives credibility to the republican investigations and capitol hill. And, peter, what does that mean . These republican investigations arent going to go away. Theyre going to linger. And i think theyre going to be very active through november 16th. So when shes a general election candidate at any moment some leak from capitol turn into a distraction. Exactly. Chuck will have much more on the clinton controversy right here tomorrow morning on meet the press. When nightly news continues on this saturday, its a powder form of a substance millions of us drink every day. But now a new lawsuit is shedding light on a potentially deadly form of caffeine. If you have moderate to severe Rheumatoid Arthritis like me and youre talking to your rheumatologist about a biologic. This is humira. This is humira helping to relieve my pain and protect my joints from further damage. This is humira giving me new perspective. Doctors have been prescribing humira for ten years. Humira works for many adults. It targets and helps to block a specific source of inflammation that contributes to ra symptoms. Humira can lower your ability to fight infections, including tuberculosis. Serious, sometimes fatal infections and cancers including lymphoma have happened, as have blood, liver, and nervous system problems, serious allergic reactions, and new or worsening heart failure. Before treatment get tested for tb. Tell your doctor if youve been to areas where certain fungal infections are common, and if youve had tb hepatitis b, are prone to infections, or have flulike symptoms or sores. Dont start humira if you have an infection. Talk to your doctor and visit humira. Com this is humira at work were back with an update on a story we first tol involves the use of caffeine specifically a pure concentrated form sold as a dietary supplement. Taking too much could be deadly as the case with an ohio teen. His family is taking legal action in hopes of preventing another tragedy. Nbcs john yang has the report. Reporter an athlete, prom king loved by those who knew him. He made everybody smile. Reporter just days before his High School Graduation last may, logan was found dead. He had overdosed on pure caffeine powder. What do yok o this product . I think it should be off the market banned unless its in the hands of a licensed pharmaceutical company. Reporter logans parents say a friend gave it to him. Its sold as a dietary supplement to boost alertness and athletic performance. This product kills. If youre going to continue to sell it and cause harms and losses youre going to be held responsible in court. Reporter in a wrongful death suit filed friday, Dennis Stiner says others provided inadequate warning about the supplements danger and engaged in activities including the supplying and delivering of a defective, dangerous and unsafe product. Pure caffeine is not regulated. A teaspoon is the equivalent of 25 cups of coffee. If used for any reason the recommended dose is about 1 16 of a teaspoon per day. When people have this powder in front of them they cant imagine the size of a matchead is the dose they should be taking. Reporter logans autopsy showed he had 23 times as much caffeine in the system as a typical coffee or soda drinker. According to stiners lawsuit the products safety labeling is unclear. Its inadequate in terms of the dosage. Its inadequate in terms of the instructions for use. In terms of the warning or the label, it isnt there. Reporter nbc news reached out to the defendants. Only amazon. Com provided a formal response saying we do not comment on active litigation. Logans case is not isolated. 24yearold wade swit of georgia died last june also from caffeine overdose. In february the stiners testified before an Ohio Senate Committee supporting legislation aimed at getting this substance off the market. My message to my kids is always change the world, make it better. And certainly did that. Reporter as the stiners push to make their own change one they hope will save lives. John yang nbc news chicago. When we come back one familys daring escape in the face of firestorm. Hey, girl. Is it crazy that your soccer trophy is talking to you right now . It kinda is. Its as crazy as you not rolling over your old 401k. Cue the horns. Just harness the confidence it took you to win me and call td ameritrades rollover consultants. Theyll help with the hassle by guiding you through the whole process step by step. And theyll even call your old provider. Its easy. Even she could do it. Whatever, janet. For all the confidence you need td ameritrade. You got this. Theres only one egg that just tastes better. With 10 times more vitamin e. And twice the omega 3s. Because why have ordinary when you can have the best. Only egglands best. Better taste. Better nutrition. Better eggs. Doing this all day, my feet and legs got really tired. So i got dr. Scholls massaging gel work insoles. 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In a special edition of dateline survivors are sharing their harrowing accounts of how they made it out alive. Heres nbcs josh elliot. Melanie was just 13. And her sister lindy 11 when they were awoken by their mothers cries of fire. She comes in wakes us all up get up get your stuff, get your books, go out to the truck. We have to go. Reporter they rushed their daughters to their truck and sped from their home in verona california. Only to find the road ahead engulfed in fire. And its like okay what do we do. Are we going to try to drive through this . Will we survive it. I dont want to die. Im too young to die. Reporter the family made a uturn but their truck stalled. So their only choice leave it and run. We follow our parents. We put our shirts up over our mouths to try and filter out the smoke a little bit. The heat that night was as if you open your oven and just that gust of heat that comes out. After maybe five or ten more feet we told our dad, look we cant do this its too hot, theres too much smoke. Reporter they sought refuge back in the truck. But just moments later. The flames start licking up over the engine under the hood up the front windshield. And my mom said we have to get out. The trucks going to explode. We need to get out of the truck now. R they ran to a dirt clearing and waited for hours until the flames finally passed. Today, they know how lucky they are to have survived a fire that devoured more than 270,000 acres, destroyed more than 2,200 homes and claimed 15 lives. Thinking back of how we survived is pure miracle, pure luck pure chance. Were very fortunate to be here together. That was josh reporting. You can hear more of those survival stories during a special dateline presentation escape the great california fire. Thats tomorrow night at 9 00 eastern right here on nbc. 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For decades the giant panda has been on the endangered species list. But now theyre starting to make a comeback. Ian williams traveled to china to check it out. Reporter alas some good news for chinas endangered giant pandas. The number increasing over the last decade according to a sur vie by the chinese government. The results are great because its drawing more attention. Reporter researchers spent three years counting pandas covering nearly 12 million acres of mountainous forest. They followed tracks and collected evidence from camera traps concludeing 8,000 remain in the wild. There are a record 375 now in captive breeding programs. Who could forget this famous trio . The worlds only known surviving panda triplets born last summer. I got to meet the adorable cubs when they were just 2 months old. Just last year 23 cubs were born most now being raised in this facility in the mountains near chung du. Most of the pandas in this kindergart area are between a year and year and a half old. And they have an enormous appetite. Here too the opportunity to be a volunteer panda keeper has brought young people from around the world who pay the Breeding Center 50 a day to feed and take care of the pandas. There is one dark spot on this otherwise encouraging picture, a virus has killed four pandas at a facility in northern china. Experts are holding an emergency meeting in beijing this week. Encouraged they say, by unprecedented levels of Public Awareness and support. Because everybody think realize panda is vital, is worth to protect. Reporter for an iconic animal while not out of danger may well have turned an important corner. Nbc news china nchtsz from cuddly creatures to close the night, thats nbc nightly news for this saturday. A quick reminder to spring forward. Im Peter Alexander reporting from new york. For all of us here at nbc new. Does monique really believe she was black bald from hollywood . Welcome to access hollywood, welcome to access hollywood, im liz. Monique was at contrary high when she won the best supporting actress oscar in 2010 for practice. Win like that should have open cure for monique but she claimed that the film director lee daniels has told her she has been essentially black bald for not working the hollywood system. Now billy and kit gave monique the chance to speak her mind. Are you black bald from hollywood or black bald just from lee daniels . Whats the beef here . You know kit first there is absolutely no beef. And i never believe nor did i ever say that i was black bald. Its a statement that mr. Daniels made to me. So by no means do i think i have been black bald by hollywood. I have had some grit experiences there. Met some Beautiful People so i never took that on to own it. To say what he said was true. I simply said what he said. The. Reporter oscar winner sets the record straight after the man behind tv hit empire butler and precious told her she hurt her career by not playing the hollywood game of promotion and publicity. Something as he told cnn tonight don lemon that could have cost her some role. You have to my ball. This is not you have to