bbc news, broadcasting to our viewers in north america and around the globe. my name is mike embley. our top stories: 50 years on, commemorating the life and murder of the civil rights leader, dr martin luther king. two more violent deaths in london take the number of suspected murders in the city so far this year to more than 50. "a huge mistake," says mark zuckerberg. he's 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. hello. 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 assassinated by a white supremacist. the main commemorative event was at the lorrain motel in memphis, tennessee, where he was murdered. a bell rang out 39 times — one for each year dr king lived. around the motel, prominent african american leaders have been speaking. only two of dr king's entourage on that day are still alive — one of them, jesse jackson, told the crowd the pain was still raw. 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 about outrage at their disparities and an equal playing fields that have become an acceptable norm, replace oui’ become an acceptable norm, replace our citizens with hope, and will we ta ke our citizens with hope, and will we take the van 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 are here now. don't be an assassin. continue his legacy. 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 notjust to 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. nada tawfik there in memphis. two murders in london in the past few hours, and two earlier in the week, have stoked fears about a sudden rise in killings in london — there've been more than 50 so far this year. young people are particularly affected — one of tonight's victims was in his 20s, the two killed on monday were 17 and 16. knife crime, especially, is soaring — fatal stabbings in england and wales are at their highest levels since 2010. let's get the latest

with our correspondent, jon donnison. tell us more on this. looking at what happened tonight, this was in hackney. two incidents. police say at about eight o'clock last night there were approached by a man with sta b there were approached by a man with stab injuries. these were officers stab injuries. thesewere officers on e; f 7 first aid on patrol. they give him first aid and he died the scene. he was believed to have been in his early 20s. earlier in the afternoon, a separate incident, a fight at a bookmakers, a few kilometres away from where this happened. there they found a man unconscious on the floor. he died shortly afterwards as a result of those injuries. you mentioned the figures— more than 50 murders in london this year. two thirds of them have been stabbing. put this in context around the world. how do the figures compare? it is interesting. the numbers are higher. we have a lot of attention this week saying london may be at a higher murder rate than new york. it just so happens in these first three months of the year that the murder

rate has been higher in london, but overall not as high as in new york. london, per 100,000 overall not as high as in new york. london, per100,000 population, has 1.2 murders in 2017. new york 3.4. in venezuela, with a city like caracas, a high murder rate with more than 100 murders for 100,000 population. cape town in south africa had 62 murders fought every 100 thousand population. so london is still relatively safe, but there is still relatively safe, but there is alarm, because these figures have been rising in recent years. what is different is that quite a few londoners are seeing a closer. my family andi londoners are seeing a closer. my family and i live in north—east london. boxing day, a boy it collapsed. my sister—in—law had just arrived and kept alive. my daughter too. we had a body in the street

outside for several hours just a few days later. people are really noticing, aren't they, and that is what is different. i happen to live a few kilometres from these incidents in hackney tonight. in the uk, people know we have very tight gun—control, so gundry and is pretty rare. “— gun—control, so gundry and is pretty rare. —— so gun crime. gun—control, so gundry and is pretty rare. —— so gun crime. the result is that more and more young people are carrying knives. iwasjust listening to a former gang member who now works with young people to try and get out of this sort of activity, and he said one of the things was that young people are carrying much bigger knives. when they were younger, they were carrying pocket knives. he said people were walking around with knives as long as their forearm. thank you, jon donnison. 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's many more than previously admitted. within the past few hours, chief executive mark zuckerberg has told journalists he'd made a "huge mistake," and that facebook had not done enough to protect people's information. 0ur north america technology reporter, dave lee, is in san francisco for us. what did you make of it all?|j thought what did you make of it all?” thought it was incredibly interesting. he spoke with reporters for almost an hour, which is a long time for some like mark zuckerberg, who is not known for being particularly open with the press. but he has since the scandal took hold. he has done it more often. in that discussion, he took questions from many different publications, including the bbc, fielding questions about things that fake news, about propaganda, and this recent scandal about the news of the use of the public‘s gator. he said they had made a huge mistake that would not be throwing anyone under the bus. —— data. he said that he would not step down. there had been some suggestion that now might be

time for mark zuckerberg to step aside, but he said that is not what is going to do. he will take control and pleasure do better and have accountability from here on in two fixed the problem. but certainly a much more open mark zuckerberg than we are used to encourage this country. he took questions from journalists, which is unusual. he would be standing down. nor will he be giving evidence to lawmakers around the world ? be giving evidence to lawmakers around the world? no. he would be giving evidence personally to lawmakers around the world, apart from in the us, where he will be appearing in front of a couple of panels next week in washington, speaking to congress on to a couple of investigations that are looking at how facebook conducted itself with the public‘s data. there was a similar request. you know politicians called fought mr zuckerberg to speak in front of parliament in britain. that was

denied by mark zuckerberg, but he said he would send one of two high—ranking deputies to answer the questions and for the other countries around the world to have similar concerns —— who have similar concerns. they will be getting their deputies as well, not mark zuckerberg and sell. in many ways, like this call with reporters today, where they had no idea what questions would be thrown at mark zuckerberg, i think that could have been a bit of a dress rehearsal for what he will face in washington next week, because those questions are going to be harder, televised, of course, and i think it could be mark zuckerberg's most unsubtle moment, as facebook chief executive, to date. 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 24 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's 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 anxious to 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? the chefs 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: bells ringing out across the united states have been commemorating the life and assassination, 50 years ago, of the civil rights leader, martin luther king. facebook has admitted the data of as many as 87 million people, many more than previously revealed, 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. let's take a look at some of the other stories making the news. president trump is ordering national guard troops to the border with mexico, to protect it, he says, until his promised wall is built.

presidents george w bush and barack obama both did the same, in their time in office. mr trump has long been keen on a physical barrier along america's southern border. in brazil, supporters and opponents of the former president, luiz inacio lula da silva, have been protesting — 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. five of the 11 judges have so far ruled against him, only two in favour. he was favourite to win october's presidential election if his conviction doesn't prevent him standing. the duke of edinburgh has undergone hip replacement surgery at a private hospital in london. in a statement, buckingham palace says the prince, who's 96, was comfortable and in good spirits. saudi arabia will open its first cinema in decades in the next two weeks. it's part of a deal the saudis have done with amc — the world's largest cinema chain. the plan is to open up to 40 cinemas in some 15 saudi cities over the next five years.

the american retailer sears was once as much a part of the american landscape as the rocky mountains — until their business empire started to crumble. the ceo said last week 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. to the fears, it is very easy to get to a. —— put an end to traffic fears. it was the american retailer for much of the 20th century, and that is on for its age, sears that sold everything under the sun. at one time, it was the world's largest retailer in terms of sales, profit and employees. starting as a mail—order watch company, sears branched out into brick and mortar

stores, hundreds of them. the heyday of sears occurred right after world war two, that is 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 wishful, as they called it, just became a staple in the american household. three out of four americans shocked or read the sears catalogue. it is what the internet yesterday. you probably what comes next. -- no. sears is shutting its mail order business, sacking 50,000 style. decades of overexpansion and sacking 50,000 style. decades of overexpa nsion and increased competition took their toll, online shopping took off in the doorstop closing. in the mid—19 90s, sears had about 3500 retail outlets bearing its name. now that number is less tha n bearing its name. now that number is less than 600. sears has been dying such a long death. that may be true but sees itself is not dead, not yet

anyway. they always say the variety, it was one shop. and hands-on person, i get books online but everything else, i like to see, touch. i don't do online shopping, my wife, she can do that but she asks me for the money. france is considered by many to be 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 it seems for some french chefs, it's definitely a case of 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 will be magnificent. when you think french cuisine, this is probably the sort of thing you have in mind, frogs'

legs, snails, relaxed, elegant dining. at the french are nothing if not adaptable and they are moving with the times. this is the french burger cup, an opportunity for france to say to the us anything you can do, we can do better. translation: it is true that in everyone's lines, burgers are american. i think it is a beautiful thing to capture your region, your culture, with a popular dish like the burger stop right about 1.5 billion burgers were sold in france last year. the fast food market worth around 51 billion euros, $63 billion. that these are no ordinary burgers, they come with a gallic twist. translation: by bringing frogs' legs into the ground beef, thatis frogs' legs into the ground beef, that is the originality of this about. with green bread to recall the landscape, with swamps and rivers, and it is all made with

regional ingredients. the winning chef coming from the southern region, his burger comprising walnut bread, locally sourced ground stake in the finest of condiments, proof that fast food can be french fruit. —— food. a reminder of our top story. bells have rung out across the united states is commemorating the life and the assassination 50 years ago of the civil rights leader, dr martin luther king. there's more on that than at any time for you on the bbc website. bye for now. thank you 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 weather is looking great. a lot of sunshine eventually in the afternoon. that'll be right across the country. unsettled weather still in the north, with some snow in places as well. 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. by early thursday morning, it will clear in northern england too, and the temperatures will drop away like a stone in the northern half of the uk. some rural spots in scotland could get down to —7 degrees. in the south, around 3—6 degrees celsius. the forecast for tomorrow. that cloud will clear away from the south—east in the morning on thursday, then sunshine all round. now, 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. the weather front is approaching. that weather front will be in place in western areas across friday. quite a split in the weather towards the end of the week. many western areas will eventually turn fairly cloudy. some outbreaks of rain, particularly in plymouth and the western isles as well. look at that central and eastern area. arrows coming in from the south. the southerly wind will start to making still warmer. temperatures up to 15 in london, with some eastern areas getting up to 13, possibly, as well. friday into saturday, that warm air is still with us. certainly not for everybody. it will be mostly hugging south—eastern and eastern areas of the country. by the time we get to saturday, the chances are that it may turn a 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, but the possibility of temperatures getting up to 17 degrees in east anglia. that is really going to feel like spring. but for most of us on saturday, it will be cooler, more like 12—14 degrees. on sunday, eventually that blob of rain from from the north. it will move northwards into scotland. things should dry out. still decent temperatures, 14 in london, 13 expected in edinburgh and glasgow as well. 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, fifty years ago, that the civil rights leader martin luther king, was killed by a white supremacist. addressing the crowd by video link, barack obama said progress didn't come easily and that people should expect setbacks. two people have died in separate attacks in north east london. they take the number of suspected murders in the city this year to more than fifty. fatal stabbings in england and wales are now at their highest levels for eight years.

the metropolitan police have blamed social media. 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's many more than previously disclosed. he admitted making a huge mistake. it is just the bus.