this is bbc news. i'm lewis vaughan jones with the latest headlines for viewers in the uk and around the world. the national guard is deployed to the us state of wisconsin, where protests continue over the shooting of another unarmed black man. donald trump receives official republican backing at the party's convention to run for another term as president. in new zealand, the man who killed 51 people at two mosques last year is confronted in court by survivors and relatives of the victims. and hong kong reports its first case of coronavirus re—infection — we'll be finding out what that now means for immunity.

hello and welcome to the programme. the governor of the american state of wisconsin has deployed the national guard to maintain "public safety", as he put it, after police shot an apparently unarmed black man on sunday. jacob blake was taken to hospitalfor surgery. video footage, showing him being shot in the back as he tries to get into a car, has led to protests in the city of kenosha. aleem maqbool reports from wisconsin. it's become a familiar scene. angry protests after the police shooting of a black man. this time, it's wisconsin, where in the early evening, officers had been called to deal with a domestic disturbance. in mobile phone video, 29—year—old jacob blake is seen walking around his car, followed by officers with their weapons drawn. as he opens the door, an officer pulls on his shirt and several shots are heard.

onlookers start screaming and the car horn blares, as mr blake slumps over the steering wheel. a prominent civil rights lawyer says mr blake's three sons were in the vehicle at the time. police say they immediately offered medical assistance, but jacob blake remains in a serious condition in hospital. some witnesses told local news channels he'd been trying to stop a fight between two women, but details of what led up to the shooting are still emerging. the reaction came quickly, though. with hundreds taking to the streets, trucks that had been moved into place to block protesters were set on fire. we're tired of it — and right now, this is the wrong generation that this is happening to. the frustration is boiling to the top and we're sick and tired. eventually, an emergency curfew was imposed, and the state leader was quick to link this incident to others, like the killing of george floyd.

you'd think after the past months of people who were stepping up to demand justice, that police departments, chiefs of police, even police unions, would rush to implement some sort of reform, but that hasn't happened. or else you wouldn't have seen the actions that we all had to see last night. the officers involved have been put on administrative leave and an investigation opened, but it is less than three months since george floyd was killed, and the concern for many african—americans has been that, in spite of the outrage over that death, little of consequence has really changed. aleem maqbool, bbc news, in kenosha, wisconsin. next, donald trump has been formally been renominated as his party's candidate for president, kicking off this week's republican national convention. he accepted the nomination with an hour—long unscripted speech. mr trump is planning to speak every night of the convention — ahead of an election that everyone agrees is largely about him. here's a little of what he had to say. we have to win.

this is the most important election in the history of our country. this is the biggest. this is it. our country can go in a horrible, horrible direction, or in an even greater direction. and before the plague came in from china, that's where we were going. we were going in a direction like we had never seen, the most successful economy in the history of our country. well, the convention is being held in charlotte, north carolina. this is the room where it's all happening. 336 delegates are meeting there, a fraction of the 2,500 who would have been there in person were it not for covid, so many states sent in their nominations virtually. have a listen. michigan, the great lakes state, is going to cast all 73 votes for president donald j trump. all of idaho's 32 votes to donald john trump.

the great state of iowa fully sends, full sent, unanimously, all of our votes to renominate you to lead our country, america, under god, for four more years. mr president and vice president, you're rehired. well, one of the battle ground states is pennsylvania, and my colleaguejane o'brien reports from bethlehem. troubling polls haven't dampened enthusiasm. voters in bethlehem turned from barack obama to propel donald trump to victory in 2016. his supporters say they're on track to do it again. yes! trump! you know what? we don't have jesus christ in the office, so nobody's perfect. and i'm not condoning some of the stuff that he has done and said, ok? you know, but i look at results. promises made, promises kept. if you look at his record, almost everything that he promised, he actually fought

for or actually got through. 0n dayi of the republican party convention, the president touted his economic record. there's never been three months where we've put more people to work — over 9 million people. and, again, we'rejust about ready to break the all—time stock market record. i mean, you look at it... wall street may be weathering the pandemic, but main street has been crippled by the lockdown. the tension between how to control the coronavirus and how to reopen the economy is stark here. biden has already said he's going to listen to only the scientists, which means... and he said he would shut the whole economy down again. nothing could be worse than that. trump isn't going to do that. pennsylvania is a battle ground state, and these small towns have a lot of influence. how people here vote will decide not only their own fate but possibly the direction of the entire country. jane 0'brien, bbc news,

bethlehem, pennsylvania. for more on the republican national convention, stay tuned stay tuned to bbc news or head to our website. there's full background, lots of analysis. a white supremacist who's admitted murdering 51 worshippers at two mosques in new zealand last year had planned to cause maximum casualties, a court has heard. survivors of the attacks and relatives of the victims have been giving emotional impact statements during the first day of brenton tarrant‘s sentencing hearing. shaimaa khalil reports. he sings a verse from the koran for the souls of the dead, from a man who survived the shootings but lost his son. ata elayyan was one of the 51 killed in the christchurch attacks. his parents still struggling to comprehend what happened. i constantly try to imagine... ..how my beloved ata felt

at the moment of the attack. what was in his mind when he realised he was departing this life? for those who made it out alive, it is a different type of struggle. the trauma will live with me forever. the images, smell and sound of the mosque on that day haunt me. i do not foresee a future where i will be without pain. in the dock, the man responsible for the mass shooting. brenton tarrant remained silent as the court heard how he'd planned his attacks for more than a year, accumulating military style weapons and researching his targets. there were distressing details about how tarrant methodically fired at his victims, some as they ran away, many on the floor, unable to escape. i had the privilege... this mother spoke of her grief. he used to give me

flowers for my birthday, but instead, i got his body. i decided to forgive you, mr tarrant, because i don't have hate, i don't have revenge. the imam of al noor mosque also spoke in court, telling the killer that he has been misled and misguided. "we're a peaceful and loving community," he said, "who did not deserve your actions." today, the people whose lives have been shattered by this massacre had their voices heard. but they also had to relive those devastating moments of pain. shaimaa khalil, bbc news, sydney. let's get some of the day's other news now. doctors in berlin who're treating the russian opposition leader alexei navalny say there's now evidence that he was poisoned. he remains in a coma and his condition is said to be serious but not life—threatening. mr navalny was flown from russia to germany on saturday.

chancellor merkel says russia must investigate the poisoning of president putin's most prominent critic. security forces in belarus have arrested more prominent opposition politicians, in a bid to end protests and strikes against president alexander lu kashenko's disputed re—election. tens of thousands of people defied the army on sunday to demonstrate, amid widespread anger at the election result, which the president's opponents say was rigged. firefighters in california are trying to control nearly 600 wildfires that are some of the worst the region has ever seen. officials on the west coast say dry lightning strikes, which started many of the fires, are due to return, along with high winds. president trump has declared the wildfires a major disaster and has released federal aid to california. in the us, the wider use of blood plasma from people who've recovered from covid—i9 as a treatment for those with the illness has been given emergency approval. president trump claims the therapy could reduce death rates by 35%.

research in britain shows that it's not certain the treatment can work. 0ur medical editor fergus walsh reports on the trials happening here. this is convalescent plasma. thousands of patients who have recovered from covid—i9 have been donating theirs. like paul, who was in intensive care in manchester for two weeks. his contains the highest level of covid—i9 antibodies doctors have seen here. it is an hour out of your day, it's painless, and if you can help other people not go through what i went through, then fantastic. i hope it helps. and sue, who was in hospital in london.

she's donated plasma five times. why do you keep coming back? because i can't put a price on what the nhs has done for me. i'm getting upset now. they were so good. it is the antibodies against coronavirus which doctors want. they are found in plasma, this yellow liquid. i tested positive for antibody, and so volunteered. so i'm about half way through my plasma donation. what happens is my whole blood is taken out, and then the plasma is filtered off, and then the red cells, white cells and platelets are fed back into my body. and this is the whole point of donation. to help patients like bernard, in hospital in chesterfield. he's part of a trial assessing whether antibodies in convalescent plasma can help covid patients like him get better faster. he is grateful to all the donors. they've done their bit, so i thought, well, all in all, i'll try and do my bit. the us has given emergency

approval to convalescent plasma as a treatment for covid, but those running the trials here say that is premature. we really want this to work. we think there is good reasons why it might, but we don't know that yet from the data presented. so i think we need more data to show it is effective, and importantly, before we start giving this treatment to tens or hundreds of thousands of people, we need data to show it is safe. thousands more donors and covid patients are needed. it will be months before we know if convalescent plasma is another weapon against coronavirus. fergus walsh, bbc news. stay with us on bbc news. still to come: as children return to school in northern ireland after the coronavirus lockdown, we'll be exploring who is most at risk — the children, teachers or parents? he's the first african—american to win the presidential

nomination of a major party, and he accepts exactly 45 years ago to the day that martin luther king declared "i have a dream." as darkness falls tonight, an unfamiliar light will appear in the southeastern sky — an orange glowing disc that is brighter than anything save the moon, our neighbouring planet mars. there is no doubt that this election is an important milestone in the birth of east timor as the world's newest nation. cheering it will take months and billions of dollars to repair what katrina achieved injust hours. three weeks is the longest the great clock has been off—duty in 117 years, so it was with great satisfaction that clock maker john vernon swung the pendulum to set the clock going again. big ben chimes

this is bbc news. the headlines: the national guard is deployed to the us state of wisconsin, where protests continue over the shooting of another unarmed black man. donald trump receives official republican backing at the party's convention to run for another term as president. here, the prime minister has said it's the moral duty of parents to send their children to school when classrooms in england reopen next week. borisjohnson said the risk to children of developing coronavirus was very small, and that it was far more damaging for their development to stay away any longer. so, who is most at risk with the full reopening of schools — is it the children or their teachers and parents? here's our science editor david shukman. the role of schools in the pandemic is a highly sensitive question, and hard to answer, because so many different factors are involved. first of all, what are the risks to children themselves?

well, there is more and more evidence that if they catch the virus, children are very unlikely to come to any harm. but what is still unknown is how easily they might pass it on. i think the risk to the individual children is very low. we know that children aren't getting sick with covid—i9 at anything like the rate of adults. however, there is concern that students may pass it to one another in the school ground or classroom, and then that student goes home with a new infection and introduces it to their household and spreads the virus through the community. so what are the risks to other people at schools and beyond? 0lder staff may be more concerned. that is why safety measures are so important. keeping apart and maintaining clean hands. when the school gates do eventually reopen, scientists say it is very likely there will be an increase in the number of infections because public transport will become busier,

and parents will be able to get back to their places of work. all of which creates more chances for the virus to spread. so, the message is that, when schools are back, the rest of us need to be even more careful. we found a range of views on all this in warrington. i really want them to go back, i think they are missing it, but i'm not 100% confident that the right precautions are getting put in place. i do feel it's better that they go back to school for education purposes. but obviously we are all frightened, all the family, of the coronavirus and the children bringing it back into the home. i think it is starting to affect some children, not being able to get out and meet their friends and move about in general like they usually do. so, yeah, i really do think they need to go back to school. and there are lessons from other countries that have already reopened their schools. denmark was the first to try in europe. it already had a low level of infections, children were told to socially distance in class, while parents were kept

involved and knew that care was needed. in germany, many schools insist on masks in the classrooms. even so, there have been outbreaks. but the risks are judged to be worth it for the sake of the children. david shukman, bbc news. scientists in hong kong have identified what they say is the first confirmed case of coronavirus re—infection. the 33—year—old man contracted a different strain of the virus from the one he'd recovered from four and a half months earlier. although he was asymptomatic, he tested positive during screening at hong kong airport. the case has raised questions around immunity to covid—i9. maria van der kerkhove from the world health organization addressed the issue today. there's been more than 2a million cases reported to date, and we need to look at something like this on a population level.

and so it's very important that we document this and that, in countries that can do this, if sequencing can be done, that would be very, very helpful. but we need to notjump to any conclusions, to say... even if this is the first documented case of reinfection, it is possible, of course, because with our experience with other human coronaviruses — and the mers coronavirus and the sars—covi coronavirus — we know that people have an antibody response for some time, but it may wane. professor of immuno—biology at yale school of medicine, akiko iwasaki, joined me a short time ago. in this case, the person who got reinfected was completely asymptomatic, meaning his immunity was able to prevent disease from happening a second time around. that is good news for him, obviously, and good news for anyone who have it again, probably asymptomatic, great. it is not great for everyone, because they can still pass it

on. so we are still in the same situation where we are now, we re situation where we are now, were lots of people have added asymptomatic and pass it onto people potentially much more vulnerable? that is definitely a possibility. this study did not look at exactly whether this person was tra nsmittable or transmitting the virus, theyjust tested for the rna, but clearly he was positive for the rna, so there is a possibility he is capable of transmitting to others. and that's why we need a vaccine, to prevent transmittable vaccine, to prevent tra nsmittable form of infection. let's move the vaccine. what does this tell us about how useful or effective a vaccine will be? not very much. natural infection induces immunity to a certain extent, but a vaccine can introduce a much more long—lasting immunity, especially given multiple times, so i think this does not mean anything for whether a vaccine would work in the future, but rather itjust means that if you are naturally infected and recovered from it,

you could get reinfected, but likely with a very mild or asymptomatic disease. this is the first confirmed case. what is your hunch... i should not ask a scientist a hunch! that's not the way you do things. what is your feeling about how common, how prevalent this is? this is the first concrete evidence for reinfection. but there have been multiple confirmed cases from asia of people who recovered from infection and became pcr—positive again. the special feature of this particular study is that they sequenced the viral genome, so they knew that the first virus was very different from the second virus. now, it's not very easy to sequence the viral from everybody who is becoming infected or reinfected, so it is very difficult to tell whether a person actually had a reinfection or is somebody who carried a lingering

virus for a long time. but now we know that reinfection can happen, we need to have a future preparedness for testing for reinfection in a more wide variety of settings. that was professor iwasaki there. we were talking about police violence earlier, and three months after the death of george floyd, most officers are still legally allowed to use neck restraints. the civil rights activist reverend al sharpton is trying to change that. he's also leading a march on washington this friday, to mark the 57th anniversary of dr martin luther king's historic march. the bbc‘s larry madowo sat down with reverend sharpton in new york. when i see rallies now, and marches now, with as many whites as blacks, it shows me there's something different going on. what sort of national legislation do you need to avoid another george floyd? i think you need legislation that says it's a felony to compress someone and cause their death, which is a chokehold or a knee on the neck.

you need a national legislation, that it's a felony. you need legislation, federal legislation, that say that when a policeman is accused of a crime, his record is transparent, to see if he's had complaints before. and you need to take away the immunity, where they cannot be personally sued. there's a lot of debate and disagreement about whether or not policing in america is systemically racist orjust a few bad apples. where do you fall on that? if there's no law, it doesn't matter, because whether they are systemically racist or not, they can do racist things and the system is not built to hold them accountable. a lot has been achieved in that time. why do you still keep harping on this issue? why can't you talk about all the progress that's been made? because the progress was made because people kept harping on the issues. the progress didn't drop out the sky. and the fact that you have a george floyd, the fact that we are still disproportionally unemployed,

the ones that die at the higher rate during covid—i9 means that we have not achieved equality. one of the criticisms, some people are saying, you do this every time there's another black person killed by the police — you are first on the scene, that it's all about publicity for you. yes, it is. i'm all on the scene for publicity, because that's what the families call me for. no—one calls me to keep a secret. people call me because they wanted out there. people call me because they want it out there. tell my critics that they finally got it. that is exactly right. and they used to accuse the civil rights leaders in the ‘60s of the same thing. ourjob is to put public attention on these grievances. that is absolutely right. guilty as charged. what's your message for america in this moment? my message is that dr king's dream that you romanticize has not been achieved, and those ones of us that come in his lineage come with the families of the abused and say, "our demonstrations must lead to legislation."

we cannot have reconciliation without legislation. the law must change. reverend al sharpton there. and as i said, that was the civil rights activist dr al sharpton. the historian and broadcaster david olusoga says that systemic racism in british television has led to a lost generation of black talent. speaking at the edinburgh television festival, he, who is a regular bbc presenter, described himself as one of the last men standing. he said he'd come close to leaving the industry on several occasions, as he'd felt "crushed" by his experience as a black man and isolated and disempowered by the culture. he said the black lives matter movement had forced british society to have conversations that had been put off or avoided for decades. that's it from me. get me online. i'm on twitter.

@lvaughanjones. this is bbc news. bye—bye. hello there. last week, storm ellen brought us some very wet and windy weather. this week, we have another named storm. this is storm francis, named by the met office. you can see this hook developing in the cloud structure on the satellite picture. this shows an area of low pressure that is deepening rapidly. it will continue to deepen as it moves across our shores, an unusually deep low for the time of the year bringing some unusually strong winds. with that, some heavy rain. it's a combination that could well cause some disruption. that rain already setting in for many of us. it will continue to pile northwards through the day. it then slows down across parts of northern england, central and southern scotland, northern ireland, some rain feeding back into wales. these areas could see some localised flooding. and then we have the winds,

which will be strengthening through the day. during the afternoon, quite widely across england and wales, we'll see gusts of 50 to 60 mph, some exposed coast and hills could see gusts of 70 mph. and that could cause some minor damage, poor travelling conditions. not as windy further north, but with the heavy rain continuing. in aberdeen, with a strong wind off the north sea, the outbreaks of rain, temperatures 13 or 14 degrees. it will not feel too pleasant. 22 degrees down towards the south. all the while, the far north of scotland, the northern isles, will stay dry with sunshine. through tuesday night, you can see this curl of wet weather, here's the area of low pressure. still spinning its way through and providing pretty strong winds. the winds slowly easing through the early hours as our area of low—pressure drifts out into the north sea. you can see plenty of white lines, isobars on the chart for wednesday morning. we will still have very gusty

conditions across eastern scotland and particularly eastern coastal counties of england. some rain as well. from the west, things will be calming down through the day. the winds will slowly ease, we will see spells of sunshine. it will feel fairly cool, though — temperatures of 13 degrees for aberdeen, 19 for plymouth, 21 in london. some more rain in the forecast for thursday and friday. shouldn't be as windy at the stage. some dry weather in prospect for the weekend. but it is going to feel pretty chilly, with a northerly wind across the uk.

this is bbc news. the headlines...

the national guard is to be deployed in the american state of wisconsin, where protests continue after police shot a black man who was unarmed. video posted online appears to show jacob blake being shot in the back. he's in a serious condition in a local hospital. president trump has made an unscheduled appearance at the opening day of the republican national convention to claim the democrats are working to steal the us elections in november. he warned, without giving evidence, that democrats planned to rig the contest through fraudulent use of postal voting. scientists in hong kong say they have documented the first confirmed case of re—infection with the coronavirus. researchers say a man who was infected in april tested positive again this month after returning from a trip to spain. now on bbc news, it's hardtalk.