ryan seacrest and jj watt. i'll back back tomorrow with alex rodriguez and our health care worker of the week. "nightline's" next, seacrest out! this is "nightline." tonight, mask attacks. coverups and meltdowns. with america confronting contagion, the struggle over mixed messages and state mandates. does where you stand in the political aisle depend on where you stand in the produce aisle? plus, family feud trump edition. the president's niece claims he's unfit to run the country. >> if i had wanted money or revenge, i would have done their ten years ago. >> "nightline" starts right now, with byron pitts. >> good evening.

thank you for joining us. walmart making masks mandatory po for shoppers starting monday. tonight, the fierce departmebat between those who wear masks those who don't. >> from a grocery store in north hollywood to a drive-through in medford, new york. >> put your mask on before you get your employees sick! >> the simple decision to wear or mott not to wear a mask has e america's latest flash point. >> back off! threaten me again! >> coronavirus cases are surging across the u.s., from california to texas, to florida. more than 3.4 million people in the country have been diagnosed with the virus. deaths are now up in 25 states. yesterday, robert redfield pointed out one of our best weapons in this fight.

>> i think if we could get everybody to wear a mask right now, i do think in the next four, six, eight weeks we could bring this epidemic under control. >> so i take these wipes. >> small business owners like keith walker in virginia believe there's only one way to successfully stay in business right now. >> over here on mizatiy station have my super duty hefty mask. >> what we know is that this virus travels on respiratory droplets, and a mask prevents those respiratory droplets from infecting someone else. that's the basic reason why each and every person should be wearing a mask right now. >> despite the science, some americans have refused to wear a mask, saying they have a medical exemption or they are infective or infringe on their pfreedoms. >> masks aren't bad, mask mandates are. >> in this video posted on facebook last week, mccormick expressed his frustrations over

new riglations. >> the constitution is being shredded. the liberty belongs to the individual, not the government. >> about half the states in the country have state-wide rules regarding masks in public places. alabama becoming the latest edition today. louisiana, the state where mccormick lives added one two days ago. but mccormick stands in defiance, vowing that he will not wear a mask in public. >> we're not looking to give up anymore of our freedoms. >> mary, a trump supporter shares that same sentiment. >> forcing people to wear a mask and damaging the economy over a virus is unjustified. >> we first met patesch in june where he smopoke to my colleagu. >> do you think going into that arena is a risk? >> absolutely not. >> patesch did not wear a mask in the arena where he was

surrounded by about 6,000 people. he says he still doesn't wear one in public. >> i do believe the virus is real. i just don't think it's as bad as people are making it to be. >> in a pfew cases, the disagreements have turned violent. a plan who wasn't wearing a mask stabbed a 77-year-old man who was wearing a mask after a confrontation at a store over a mask. this video was released approa deputy wilding a knife. >> drop the weapon, drop the weapon! >> the deputy opened fire, wounding the man who later died at the hospital. despite these rare examples, an abc news poll found nine out of ten americans are wearing face masks when they leave home. >> i'm simply asking you to put on a mask to protect people around you. if you go to the super market

and you end up being around someone's grand parent or someone's pregnant partner. >> public health officials said the general public did not need masks. in this tweet from february 29th, u.s. surgeon general jerome adams wrote, seriously, people, stop buying masks. they're not effective in preventing the general public from catching coronavirus. on april 3rd, officials reversed course. >> we now know from recent studies, that a significant portion of individuals with coronavirus lack symptoms. in light of this new evidence, cdc recommends wearing cloth pace coverings in public settings. >> now with the number of cases exploding, even the president sees the immediate, talking about it in this interview with cbs news. >> if it's necessary, i would urge them to wear a mask, and i would say follow the guidelines. >> recently wearing a mask during a visit to walter reed hospital. >> what's evidence coming in now from around the world? >> two hairstylists in spring

field, missouri who had covid-19 were in contact with over 139 clients and luckily were working for a salon which followed the local ordinance which required toifrn wear everyone to wear a mask. it was later found they didn't transmit it to anyone. >> i'm getting ready to go to work now. >> keith walker, a salon owner in virginia says that example highlights the importance of mask wearing. >> i do believe wearing the mask and doing everything can you to protect the client from what you, yourself, may have is very important. >> we first met him in april. >> there's my beautiful salon. >> when the pandemic hit, he was forced to shut down his siss. >> tre'sy littlig whi l arrieaboutowhey woulprovide for wl family. ur kids lik and

>> hi! >> when the salon reopened in may. >> here we go, to start our day. unlo unlocking the salon. >> his concern for how to provide for his children was eased, but a new one was added, safety. >> i had two clients who called and were diagnosed with covid, so i was a little nervous after their quarantine and after they were cleared to go back to work. they came in, and i was still nervous then, too. i have to wipe everything down. >> adhering to cdc guidelines, walker's had it to change the way he runs his business, among the scissors and driers, masks are also a critical tool. >> i did have a few clients who would come in and say, do i really have to wear their mask? when i told them av to weay the wou wear the mk. >> tophe ctorssacricof wearing

one that will keep his beloved business booming. >> i know we're all uncomfortable under the mask. it's wear a mask or wear a ventilator. >> people think, you're taking away my rights. i don't feel comfortable. it's not about you. it's about the person next to you. >> misty diaz knows all too well the importance of wearing a mask. she spent last night saying good-bye to her father jose who contracted covid-19 and spent two weeks in the icu. >> there's nothing that we can do. and i called my dad, and i thanked him for everything he's done for me. >> jose passed away this morning. >> now through her pain, misty's main mission, why masks matter. >> this is about showing compassion pour othefor others what we need to do for the short time ha that we need to do it.

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the explosive new book about the president hit shelves today, written by his niece. >> he's utterly incapable of leading this country, and it it's dangerous to allow him to do so. >> that's the president's estranged niece, mary trump. speaking out for the first time since publishing a sad, scathing memoir about her family, including her uncle, donald trump. my colleague, george stephanopoulos sat down with her for her first interview. she is the daughter of fred trump jr., he was a pilot for twa and a long strug with alcoholism, die at the age of

42. along with her decades of living on the margins of the trump dynasty. >> i didn't write it as a form of therapy or anything like that. in fact, i would have preferred not to write it. it was quite difficult. the book is absolutely bourne of the family dysfunction. >> it's the first time a family member has broken rank, offering a look at what shaped the 45th president. the was published despite legal attempts to prevent it from ever seeing the light of day. mary's cousin eric trump simply tweeting "every family has one." >> why didn't you write the book three years ago? >> i thought long and hard about saying something. i knew if i had said anything i would have been painted as a disgruntled, disinherited niece who just wanted her 15 minutes,

which obviously is being said about me now. >> that's exactly what the white house says, basically you're lying for mountainey. >> if i had wanted money or revenge i would have done their t ten years ago. >> your brother's not happy with the book. >> this is entirely my doing. i didn't consult anybody in my family. nobody knew it was happening, i didn't feel that i needed to ask permission by any stretch of the imagination, but i didn't want to implicate anybody. i believe very strongly it's my obligation. >> while today she's being characterized as the family's outcast, there was a short time when mary trump worked directly with her uncle donald trump who briefly took her on to write "the art of the come back." >> i thought my goal was to tell the story of how he regrouped, pulled himself up by his

bootstraps. >> while researching the book there was a trip to mara l-a-la. >> you describe a scene. >> i went to the tablewari wear shorts and a bathing suit and he looked up and commented on my appearance in a way that was really shocking to me. he exclaimed something and then said, "mary, you're stacked", or something like that. and i grabbed the towel and put it around my shoulders. >> mary says the person who shaped the future president the most was his father, whom she describes as a sociopath. >> he had no empathy. he was incredibly driven in a way that turned other people, including his children, his wife, into pawns. to be used to his own ends, and, in my father's case, tragically,

he was not of use. >> mary says her father, fred jr. was the heir apparent to the business until he rejected his eldest son. >> you wrote, donald my father. >> that was harder to write. partially, because my dad, he was kind, generous, fiercely loyal and beloved. >> you say that was the hard sentence to write. i lift out the next sentence. i can't let him destroy my country. >> there are so many parallels between the circumstances in which my family operated and in which this country is now operating. the collateral damage that can be created by allowing somebody to, to live their lives without accountability. and it is striking to see that

continuing now on a much grander scale. >> the family's business empire has been shrouded in secrecy pofor decades. s xet, defngt ru wldello the fa finances, providing 19 boxes full of decades of tax records she obtained in litigation with the family. >> you didn't know what was in the documents, really? >> i had no idea. they seemed to think that it was extremely valuable. and i knew that they knew what they were doing. >> the "new york times" reporting revealing fred senior's net worth was far greater than previously estimated and that far more of the president's wealth was attributable to his father than had been previously known. the documents revealing accounting practices by donald

and hayis siblings that many thk could be tax fraud. >> it was designed to siphon money away from my grandfather's veryuccesspleful company so the money could be disappeared and the money lett to pay taxes on was significant significantly less. >> the president unscathed by the bombshell revelations. >> for most of us, our mistakes are cumulative. when there's a reckoning, the sum total of what we've done is taken into account. that does not seem to exist in donald's universe. >> but for you, the political become personal, the personal has become political. >> yes. >> you write, "i had to take donald down." >> yes, maybe a bit of an overstatement there in the sense that i didn't ever think that there was any one thing i or mib

el anybody else could do, but certainly n that mome certainly in that moment i'm describing, i fitelt i needed t do anything i could to stop this and also to make up for the fact that i didn't do anything in the past. >> what do you want to happen now? >> this country is on a precipice, and people immediate need to know. people need as much as possible to make a decision that makes sense for our future. >> her final words for the president, unvarnished and stark. >> and if you're in the oval office today, what would you say to him? >> resign. >> you can stream the full, exclusive interview on abc news live. next, when classes are out. cool? drop the taco. get in the car.

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school in melbourne, florida getting ready to go back to school next month, building a new classroom outside. more space, more fresh air and less of a chance of contracting covid-19. cases skyrocketing in the state. these teachers and students determined to adapt, one outdoor classroom at a time. that's "nightline" for this evening. see you right back here same time tomorrow. thanks for the company, america. good nye. ♪ >> dicky: from hollywood, it's jimmy kimmel live. with guest host, sebastian maniscalco. tonight, kelly ripa and ryan seacrest and j.j. watt. and now, here's sebastian

maniscalco. hello and welcome to "jimmy kimmel live!" i am your guest host for the next two nights sebastian maniscalco. i'm really happy jimmy asked me to host his show, but come on. when italians host we need two things, food and a lot of people. i'm looking at two guys in hazmat suits, am i safe? i went from performing in front of 20,000 people a night to a laundry room in west hollywood. [ buzz ] the sheets are done. so he asked me to host, i brought food. i didn't get one large platter with people picking up cheese and meats like they're in the game operation. i adjust to the times. i made individual pandemic platters. for the crew. enjoy that. really the only place i go besides my house right now is to the supermarket and it's a nightmare. i didn't think grocery shopping could become an even bigger pain