welcome to bbc news, broadcasting to viewers in north america and around the globe. our top stories: 50 years on, commemorating the life and murder of the civil rights leader dr martin luther king. a huge mistake, says mark zuckerberg. he has now admitted data from up to 87 million facebook users may have been misused. china unveils its retaliation in the trade dispute with president trump, but hints that talks are also possible. also in the programme: we meet the south african doctor who gave up martin luther king was assassinated by a white supremacist.

the main commemorative event was at the lorraine motel in memphis, tennessee, where he was murdered. a bell rang out 39 times — one for each year dr king lived. prominent african american leaders have been speaking. only two of dr king's entourage on that day are still alive. before the bells rang out, the reverend michael pfleger, a catholic priest and activist against street violence in chicago, spoke of the importance of maintaining dr king's legacy. the question is, will we wake up to our outrage at the disparities and unequal playing fields that have become an acceptable norm, replace our citizens with hope, and our fear with hate? will we take the vein out

of the hate of the bloodstream of america's veins, and give her a transfusion with blood, truth, justice, and righteousness? will we hold america accountable for what she has promised us, all will we be assassins to martin's assassinations with our silence? we may not have been here 50 years ago, but we're here now. don't be an assassin. continue his legacy. american civil rights activist jesse jackson spoke from the lorraine motel balcony, where king was gunned down, and said the sore is still raw from the fatal shooting. he made this plea to the crowds. i've been blessed by god to come back here 50 years later, and every time the scab comes off, the story is still raw. the blood still oozes. —— sore. this is the site of the crucifixion. not farfrom

—— sore. this is the site of the crucifixion. not far from here —— sore. this is the site of the crucifixion. not farfrom here is the resurrection, the new hope, and the resurrection, the new hope, and the new possibilities. our correspondent nada tawfik summed up the mood in memphis. i would describe it as almost like a pilgrimage of people young and old, from here in memphis and across the country, coming here not tojust honour the legacy of dr king, but really to recommit themselves to the struggles that he fought against 50 years ago. and so here in memphis, you had 10,000 people marching in the name of his legacy, singing songs, rejoicing. and here at the official commemoration in memphis there was a mix of performances, and as i say again, celebration, storytelling, from icons who were there with him on that night, and also some very passionate speeches from activists and faith leaders, talking about the opportunity gap that still exists here in america, and all the unfinished business left to realise dr king's dream.

facebook has now revealed that as many as 87 million users may have had their personal information improperly shared with and used by the political consultancy cambridge analytica. that is many more than previously admitted. within the past few hours, chief executive mark zuckerberg has told journalists he had made a huge mistake, and that facebook had not done enough to protect people's information. daniel ives is a cyber security expert with gbh insights, and hejoins me now from hawaii. what did you make of this? very unusualfor what did you make of this? very unusual for mark zuckerberg to take questions from journalists. i understand he will not going around the world to lawmakers. though his key executives will be. he had to do it. i mean, this was some ink especially ahead of next week, with the congressional testimony, there isa the congressional testimony, there is a lot of heat in the kitchen and

zuckerberg is facing it and this is the first step to calming the waters. do you see this as a kind of rehearsal for waters. do you see this as a kind of rehearsalfor him giving congressional testimony?” rehearsalfor him giving congressional testimony? i think it is the first step toward next week. it is going to be a grilling he is going to face, and he really needs to come out with transparency. 87 million is a lot bigger than 50 million. and i think thisjust speaks to now trying to calm the waters, as user and advertiser backlash is a major threat to the business model, with regulation the biggest worry. he insists facebook is not seeing a hit yet from users quitting or advertisers running. do you believe him ? quitting or advertisers running. do you believe him? yes, look, we believe we are seeing very slight backlash. we think that most 2% to 396 backlash. we think that most 2% to 3% of users could defect or significantly lower engagement. that could translate to about $5 billion a year of advertising revenue. we

think this is factored into the stock, and now the sorry tour starts next week as his pr nightmare continues. we have a few problems with the connection, but if you can hear me 0k, with the connection, but if you can hear me ok, let's stick with it, if you well. he has admitted to a huge mistake. clearly much more data was misused than he has admitted so far. do you suspect there are more revelations to come in this? yes, look, this is going to be a pandora's box situation where you are going to continue to see more data come out, i think we will see more of that next week. so i think thatis more of that next week. so i think that is the tip of the iceberg. but right now it is about trying to calm users, regulators and advertisers to make sure this won't happen again, and try to make sure the business model stays intact. that is the key. there is going to be some regulation, and now they really need to make sure that this doesn't start a broader chapter which changes business model of facebook going forward. let's take a look at some

of the other stories making the news: president trump is ordering troops to the border with mexico. the deployment comes a day after he floated the idea as a way to protect the border until his promised wall is built. mr trump has long advocated for a physical barrier along america's border with its southern neighbour, to block illegal immigrants and the flow of drugs. in brazil, supporters and opponents of the former brazilian president luiz inacio lula da silva have been protesting, with both sides warning of a threat to democracy if a supreme court ruling doesn't go their way. judges are deciding whether he can remain out of prison while he appeals against a corruption conviction. however, five out of ii supreme courtjudges have so far ruled against him, with three in favour. lula was seen as the favourite to win 0ctober‘s presidential election if his conviction didn't prevent him from standing. duke of edinburgh has undergone hip replacement surgery. in a statement, the pallas said he is comfortable

and in good spirits. now, if anyone thought china would take donald trump's protectionist threats lying down, think again. beijing has announced huge tariffs against us products, day three of growing trade tensions, that are spooking financial markets and wiping billions from people's pension plans and investments. robin brant reports from shanghai. in just 2a hours, both the united states and china have laid out plans to hit each other‘s exports. the us has a long list, around 1,300 items, including ovens and flamethrowers. the punishment is in response to claims that china has stolen its intellectual property. it is also about the decades—old policy of forcing foreign firms to share their technology when they invest here in china. china, though, is targeting far fewer products, and it looks like it wants to cause more pain. soy beans, corn, cotton, beef, tobacco are all on the list. soy bean alone is a multibillion—dollar import business to china.

these measures would hit specific farming areas of the us hard, but china insists it doesn't want a trade war. translation: frankly speaking, the challenges we are facing today are huge, for sure, because of the scale of the trade volumes, as you can see. however, china's stance has been clear—cut. we don't want a trade war, because the result will only be a no—win situation that hurts the interests of china, the united states, and the prospect for global economic development. just as significant is the fact that automobiles and aircraft are on the list. ford sells tens of thousands of cars that it ships here from the us and boeing, the aircraft giant, could see its attempts to make further inroads into the domestic china market put on hold if its aircraft fall into the specific categories being targeted. but all this is yet to be acted on, and there is a possibility of a deal, with the us moving last

week to extend its consultation period before acting. whatever happens now, the reality is that none of these tariffs have yet been imposed, and it appears that the us administration is angling for some kind of negotiated settlement. robin brant, bbc news, shanghai. stay with us on bbc news. still to come: would you like frogs' legs with that? these chefs are making the burger uniquely french. 55 years of hatred and rage, as theyjump up on the statue. this funeral became a massive demonstration of black power, the power to influence. today is about the promise of a bright future, a day

when we hope a line can be drawn under the bloody past. i think that picasso's works were beautiful, they were intelligent, and it's a sad loss to everybody who loves art. this is bbc news. the latest headlines: commemorations have been taking place in the united states to mark the assassination, 50 years ago, of the civil rights leader martin luther king. facebook has admitted that the data of as many

as 87 million people may have been used inappropriately by british—based political consultants. at the hague on wednesday, russia failed in its bid to form a joint investigation into the poisoning of a former spy and his daughter. the british government, which points the finger squarely at moscow for the attack, said russia's call for such an inquiry was perverse. russia has denied any responsibility. james landale has more. more than one month on in salisbury, the investigation continues into a nerve agent attack that britain believes was carried out by russia. an assessment based on science, yes, but also intelligence. no other country has a combination of the capability, the intent and the motive to carry out such an act. but the head of the porton down military laboratory muddied the waters by saying it was not the job of his scientists to say where the nerve agent had been made, contrary to what the foreign secretary had appeared to suggest. the people from porton down, they were absolutely categorical.

i mean, i asked the guy myself, i said, "are you sure? he said, "there's no doubt." today, the foreign office deleted an inaccurate tweet that had also suggested porton down had said the novichok was produced in russia. all of which gave russia another chance to question britain's evidence, calling at short notice a meeting of the chemical weapons watchdog, the 0ch in the hague, where its diplomats accused britain of a dirty flow of lies and outright russiaphobia. translation: the result of their investigation was announced in a hurry by their prime minister, theresa may, literally a few days after the incident. even though the investigation would take a few weeks or even months. british ministers insisted porton down's job was always to identify the nerve agent, and it was for the police and intelligence services to establish who had used it and why. porton down identified fairly

quickly the strain of nerve agent and once that's identified, you remove from the list of suspects 99.9% of the people. we know that the russians designed it and we know that the russians were the only people to make it and stockpile it. this muddle is a self—inflicted wound by the british government that has given russia yet another opportunity to challenge's britain's version of events, but for now at least, the international coalition behind the uk appears to be holding. the eu issued a statement saying it had full confidence in the uk's assessment and investigation, and attacking russia for what it called "a flood of insinuations." this evening, britain and its allies defeated a russian proposal for a newjoint investigation into the salisbury attack, which mrjohnson branded a "ludicrous proposal to obscure the truth and undermine the opcw." but back in the uk, the labour leader accused the foreign secretary of being too quick to blame russia when he believed other

explanations could emerge. borisjohnson seems to have completely exceeded the information that he'd been given and told the world, in categorical terms, what he believed had happened, and it's not backed up by the evidence he claimed to have got from porton down in the first place. in turn, mrjohnson accused mr corbyn of playing russia's game. 28 countries had backed britain, he said, but mr corbyn had sided with the russian spin machine. so the diplomatic and political fallout from the salisbury attack continues, with russia calling a meeting of the un security council tomorrow. james landale, bbc news. in moscow, the head of russia's foreign intelligence agency has claimed the west is building a new iron curtain. president putin said he hoped common sense would prevail in the dispute over the skripal poisoning. from moscow, our correspondent steve rosenberg. the matinee in moscow seemed an odd choice.

russian bombs at a conference on global security. but the message was loud and clear — that russia is a military superpower and is determined to stand up to the west. when he took the stand, russia's foreign intelligence chief accused the british and american secret services of a grotesque provocation over the salisbury poisoning. the west, he said, was building a new iron curtain. translation: washington has become fixated with the fight against the nonexistent so—called russian threat. this has reached such an absurd level that it's possible to speak of a return to the dark days of the cold war. east west tension has been building for some time, but the diplomatic war over the nerve agent attack has deepened the divide. this is a situation that is really poisoning our relations, and this is something that we should

jointly find an antidote to. the british are good at creating antidotes, aren't they? and what are the russians creating? chaos, says the west. moscow disagrees. the world according to moscow is a very different world from the one seen through the eyes of the west. russia portrays itself as the cornerstone of global peace and stability, of international order, the very order the british government accuses moscow of undermining through hostile activities. on a visit to turkey today, president putin said he hoped common sense would prevail, not only in the skripal case, but overall in international relations. back at the moscow conference, they may be talking peace and global stability, but business is business. what's your price? it depends on negotiations. whether in arms sales or in geopolitics, russia has set its sights on competing with the west. steve rosenberg, bbc news, moscow.

the us retailer sears was once as much a part the american landscape as the rocky mountains until their business empire started to crumble. the company's ceo said last week that it was fighting to survive after a merger with rival kmart failed to spark a turnaround. what's happened instead is a tale of an icon in decline, as mat morrison reports. advertisement: put an end to traffic fears, it's very easy to get to sears. sears' appliance spectacular. sears, where america shops for value. it was the american retailer for much of the 20th century, an amazon for its age, sears sold everything under the sun, from homegoods to actual houses. at one time, it was the world's largest retailer in terms of sales, profit and employees. largest retailer in terms of sales, it was the number — fourth employer in this company. starting as a mail—order watch

company, sears branched out to brick and mortar stores — hundreds of them. the heyday of sears occurred right after world war two, that's a period of post—war optimism in this country, and sears followed its customers to the suburbs as they followed their dreams. and then there was the catalogue. the wish book, as they called it, even at christmas time, just became a staple in the american households. three out of four americans shopped or read the sears catalogue. it was what the internet yesterday. you probably know what comes next. sears roebuck, the legendary purveyor by post to rural america, is shutting its mail order business, closing 150 stores and sacking 50,000 staff. decades of overexpansion and increased competition took their toll, online shopping took off, and the doors started closing. in the mid—1990s, sears had about 3500 retail outlets bearing its name. now, that number is less than 600. sears has been dying such a long death. that may be true but sears itself isn't dead, not yet anyway. they always say had a variety

and it was a one place shop, you know, you could come in and get everything. i'm a hands—on person. i, you know, i get books online but everything else, i like to see, touch, try on. i don't do online shopping. my wife, she do all of that but she asks me for the money. matt morrison, bbc news. many still see france as the home of fine dining — rich food, high—class eating, the occasional glass of wine. but in recent years, fast food has broken in to the market. burgers now sell more than ham baguettes, and some french chefs now seem to be feeling if you can't beat them, join them, as the bbc‘s tim allman explains. if you don't like snails, just call them escargot and they'll be magnifique. when you think french cuisine, this is probably the sort of thing you have in mind — frogs' legs, snails, relaxed, elegant dining. but the french are nothing if not adaptable and they are moving with the times.

this is the coupe de france du burger — the french burger cup to you and me — an opportunity for france to say to the us, anything you can do, we can do better. translation: it's true that in everyone's mind, burgers are american. i think it's a beautiful thing to capture your region, capture your culture, with a popular dish like the burger. around 1.5 billion burgers were sold in france last year. the fast food market worth around 51 billion euros, or $63 billion. but these are no ordinary burgers, they come with a gallic twist. translation: by bringing frogs' legs into the ground beef, that's the originality of this burger. the frog, with green bread to recall the landscape, with swamps and rivers, and it's all made with regional ingredients. the winning chef coming from the southern gard region.

his burger comprising walnut bread, locally sourced ground steak, and the finest of condiments — proof that fast food can be french food. tim allman, bbc news. gospel is one of the most popular genres of music around the world, nowhere more so than in south africa. well, after 10 years of medical practice, dr tumisang makweya decided to devote his time and passion to his first love, singing. known simply as dr tumi to his devoted fans, his change of career has proved more successful than he could ever have imagined. speak a word and we will go. in a good direction. speak a word and we will live. i feel this sound appeals toa will live. i feel this sound appeals to a lot of groups. if you go to traditional, you alienate a lot of people that don't listen to

traditional gospel. if you go to rocky, you alienate a lot of people who love a bit of traditional gospel as well. i wanted to create a feel that literally has a middle ground. very warm, simple, melodic almost healing type of songs. i'm nothing without you. without you. nothing without you is the song i first released and i put it out when people said, we don't want you are born, we don't think it will work, we don't want a signed a distribution deal. and because it was a live video recording i had video clips so i put the nothing without you video clip on youtube that started trending and getting thousands of views daily. in one of

the distributors that i had spoken to get me a call and said, you know what, maybe let's have that conversation again. and a lot of people asked me if i'm still a real doctor. i practised for ten years to date but on the eighth year, he became a mission to focus on the music itself. i said there is something missing, there is something missing, there is something more to me that i'm not doing to serve people and to send a message of hope. # we love you, jesus. we love you, lord. when you sing, and you sing along with people, you find a connection because used the then feeding off oui’ because used the then feeding off our people are responding to the songs. i always look at it as they ministered to you as you minister to them. i love live productions and live recordings. we love you, lord.

we love you, lord. we love you, lord. a reminder of our top story: bells have been tolling in cities across the united states, marking the moment, fifty years ago, that the civil rights leader martin luther king, was gunned down by a white supremacist. they rang out 39 times — one for each of dr king's years. the main commemorative event took place at the motel in the city of memphis, tennessee, where the murder took place. prominent african—american leaders addressed the crowds. jesse jackson, who was there at the time, said the pain was still raw. more on that and more on the website. thanks for watching. wednesday brought a real mix of weather across the country. thursday is looking

completely different. it's going to be quite a chilly start. frosty start for some of us, but the weather is looking great. a lot of sunshine eventually in the afternoon. that'll be right across the country. that is finally clearing away and as we head through the course of the morning the remnants of the cloud across parts of lincolnshire, east anglia, the midlands, and the south—east but the skies already clearing in many parts of the country. by early thursday morning, it will clear in northern england too, and temperatures will drop away like a stone in the northern half half of the uk. some rural spots in scotland could get down to —7 degrees. whereas in the south,

around 3—6 degrees celsius. the last of that cloud clears away from the south—east in the morning on then it's pretty much sunshine all round. however later in the afternoon, the skies might turn hazy here out west and into northern ireland. a slightly cooler day on the way thursday. maybe 8—12 degrees celsius. that's because the morning will be pretty chilly. that sun will have to work harder to warm things up. you can see the weather front is approaching. that weather front will be in place in western areas of the uk across friday. quite a split in the weather towards the end of the week. many western areas will eventually turn fairly cloudy. outbreaks of rain, particularly in plymouth and the western isles as well. look at that — central and eastern parts of the country. arrows coming in from the south. temperatures up to 15 in london, some eastern areas getting up to 13, possibly, as well. friday into saturday, that warm air is still kind of with us. certainly not for everybody. it will be mostly hugging south—eastern and eastern areas of the country. so by the time we get to saturday, the chances are that it may turn a little bit warmer still.

but notice that there is a bit of rain drifting out of the south, moving northwards. some of us will get some rain on saturday, with the possibility of temperatures getting up to around about 17 degrees there in east anglia. that is really going to feel like spring. but for most of us on saturday, it will feel cooler, more like 12—14 degrees. on sunday, eventually that blob of rain from the north will move northwards into scotland. partly cloudy for most on sunday. decent temperatures, 1a in london, 13 expected in edinburgh and glasgow too. that's it, have a good day. this is bbc news. the headlines: bells have been tolling in cities across the united states marking the moment, 50 years ago, that the civil rights leader martin luther king was shot dead by a white supremacist. addressing the crowd by video link, barack obama said progress didn't come easily, and that people should expect setbacks. mark zuckerberg has insisted he is still the best person to lead facebook, despite the revelation that the personal data of as many as 87 million people may have been misused

by british—based political consultants. that is many more than previously disclosed. he admitted making a huge mistake. china has responded to the announcement of tariffs on some its exports to the united states by announcing measures of its own against some american products. the white house says president trump is still hopeful that china would change what he described as its unfair trade practices. now on bbc news, it is time for click